初中英语条件状语从句优秀课件
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初中英语语法状语从句课件(共45张PPT)

• 3)than 意为“比……更……”; • The boy is taller_than_his_father. (比他的父
亲还高)
4)比较状语从句通常与倍数表达法结合起来运用。
①A +is…times +as+ adj.原级+as +B ②A +is…times+ adj.比较级+than +B ③A +is…times+ the size/length/height/width/depth +of + B ④The size/length/height/width/depth… +of+ A+ is…times of +B
where引导 A句+where+B句 在B句…地方, A句… 在环境污染严重的地方,许多珍稀物种处于灭 绝的边缘。
Many rare animals are on the verge of extinction where environmental pollution is serious.
三、条件状语从句 1. If引导的条件句 2. Unless 3. Once 4. As long as
• 这个数据在下降到1990年的20%之前,它先上 升到1980年的80%
• Before the figure jumped to 20% in 1990, it increased to 80% in 1980.
• 5. A句+since+B句/时间短语 【自从B句…,A句就…】
自从手机发明以来,人们的生活发生了巨大变化。
五、目的状语从句
A句+in order that+B句 A句+so that+B句 【A句…是为了B句…】
初中英语:If引导的条件状语从句省公开课获奖课件说课比赛一等奖课件

If it _d_o_e_s__n_’t__ra_i_n__ tomorrow,
_h_e_’_ll_p_la_y__b_a_s_k_e_tb__a.ll
Look and say
I will_e_a_t_s_o_m__e__fo_o_d__
if I’m hungry.
I will__h_a_v_e_a__r_e_s_t __
exercise.
if旳反义词:if...not...=unless,意思是:“假如不,除非”
I won’t go there unless I hear from you.(同义句 if ) don’t
I won’t go there _____ I _____hear from you. I won’t go to the party if I am not invited. (同义句)
Look and say
__I _w_i_ll_s_e__e_a__d_o_c_t_o_r_ if I’m ill.
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
位置:从句可放在主句之前或之后,但是放 在主句之前须有逗号隔开
If it rains tomorrow, I_w_i_l_l _w_a_t_c_h__T_V__a_t_h__o_m__e. I won’t__p_la__y_b_a__s_k_e_t_b_a_ll_.
I won’t go to the party_u__n__less I am invited.
变换:
1.有if引导旳条件状语从句旳复合句中,当主句和从句旳 主语均为you时,可转换为“祈使句,and+简朴句”或
“祈使句,or+简朴句” You can pass the exam if you work hard. Work hard ----------------,and you will pass the exam.
_h_e_’_ll_p_la_y__b_a_s_k_e_tb__a.ll
Look and say
I will_e_a_t_s_o_m__e__fo_o_d__
if I’m hungry.
I will__h_a_v_e_a__r_e_s_t __
exercise.
if旳反义词:if...not...=unless,意思是:“假如不,除非”
I won’t go there unless I hear from you.(同义句 if ) don’t
I won’t go there _____ I _____hear from you. I won’t go to the party if I am not invited. (同义句)
Look and say
__I _w_i_ll_s_e__e_a__d_o_c_t_o_r_ if I’m ill.
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
位置:从句可放在主句之前或之后,但是放 在主句之前须有逗号隔开
If it rains tomorrow, I_w_i_l_l _w_a_t_c_h__T_V__a_t_h__o_m__e. I won’t__p_la__y_b_a__s_k_e_t_b_a_ll_.
I won’t go to the party_u__n__less I am invited.
变换:
1.有if引导旳条件状语从句旳复合句中,当主句和从句旳 主语均为you时,可转换为“祈使句,and+简朴句”或
“祈使句,or+简朴句” You can pass the exam if you work hard. Work hard ----------------,and you will pass the exam.
条件状语从句 PPT课件

1.当主句和从句所表示的是原理、客观真理、
规则时,主句是一般现在时(包括祈使 句和含有情态动词can/may/must等), 从句也要用一般现在时。
例如: 1) If you put a piece of paper into water, it gets wet.如果你把一张纸放进水中,它 会变湿。(原理)
2. Where _______ he _________(see) the film if he ________________(have) time?
3. If there __________(be) fewer trees, there _______________( be) more pollution.
1) If you are looking for Peter you’ll find him upstairs. 如果你是在找彼得,上楼就 会找到他。
2) If you have finished dinner I’ll ask the waiter for the bill. 如果你吃完了,我就 叫服务生来算账。
it____(die). 10. Don't go out tomorrow if it ______(rain).
二、同义句转换
1. Play some sports, and you'll be healthy. ____ _____ play some sports, you'll be
healthy. 2. If you study hard, you will catch up with
So I hope all of us will try to follow these: Never throw rubbish everywhere. Don't step on the grass or pick flowers near the beach. In a word, beaches are an important part of our living environment; we all need to try our best to protect them. (小结)
规则时,主句是一般现在时(包括祈使 句和含有情态动词can/may/must等), 从句也要用一般现在时。
例如: 1) If you put a piece of paper into water, it gets wet.如果你把一张纸放进水中,它 会变湿。(原理)
2. Where _______ he _________(see) the film if he ________________(have) time?
3. If there __________(be) fewer trees, there _______________( be) more pollution.
1) If you are looking for Peter you’ll find him upstairs. 如果你是在找彼得,上楼就 会找到他。
2) If you have finished dinner I’ll ask the waiter for the bill. 如果你吃完了,我就 叫服务生来算账。
it____(die). 10. Don't go out tomorrow if it ______(rain).
二、同义句转换
1. Play some sports, and you'll be healthy. ____ _____ play some sports, you'll be
healthy. 2. If you study hard, you will catch up with
So I hope all of us will try to follow these: Never throw rubbish everywhere. Don't step on the grass or pick flowers near the beach. In a word, beaches are an important part of our living environment; we all need to try our best to protect them. (小结)
Unit 10 if 引导的条件状语从句课件2024-2025学年人教版英语八年级上册

C. will know D. didn’t know
If I am late, the teacher will be angry with me.
What will happen if your teacher is angry with you?
If the teacher is angry with me, I will be sad.
What will happen if you are sad? If I am sad, I will cry.
5. Don’t _c_r_o_s_s_ (cross) the road if the light _i_s_ (be) red.
6. If you _w__o_rk__ (work) really hard, you _w_i_l_l _b_e_ (be) famous and rich.
( ) Johnson won’t answer the phone if he ___________ the number. A. knew B. doesn’t know
If I study hard, I will go to Beijing University.
What will happen if you get up at 9:00 this morning ?
If I get up at 9:00, I will be late.
What will happen if you are late?
If you don’t go to the party, what will you do?
If I don’t go to the party, I will sleep at home.
If I am late, the teacher will be angry with me.
What will happen if your teacher is angry with you?
If the teacher is angry with me, I will be sad.
What will happen if you are sad? If I am sad, I will cry.
5. Don’t _c_r_o_s_s_ (cross) the road if the light _i_s_ (be) red.
6. If you _w__o_rk__ (work) really hard, you _w_i_l_l _b_e_ (be) famous and rich.
( ) Johnson won’t answer the phone if he ___________ the number. A. knew B. doesn’t know
If I study hard, I will go to Beijing University.
What will happen if you get up at 9:00 this morning ?
If I get up at 9:00, I will be late.
What will happen if you are late?
If you don’t go to the party, what will you do?
If I don’t go to the party, I will sleep at home.
条件状语从句课件

条件状语从句课件
通过本课件,你将了解条件状语从句的定义、构成、用法、注意事项,了解 常用的条件状语从句,并学会将条件状语从句与其他句子结合使用。
条件状语从句的定义
定义
条件状语从句是一种从属从 句,表示主句发生的条件。 它以“如果”、“要是”、“非”或 “假如”等词开头。
句型
主句 + 条件状语从句
例句
如果...就...
如果你努力学习,你就会取得 好成绩。
要是...就...
要是你来,我就开心。
只要...就...
只要你有信心,你就能成功。
条件状语从句与其他句子的结合
1
因果关系
如果你好好学习,你就会取得好成绩。
2
假设结论
如果你不来,我你就一定会成功。
练习和测试
选择题
如果你认真准备,你就能通过考 试。
填空题
要是你明天忘了带铅笔,我会借 给你。
解答题
只要你努力学习,你就会进步。
表示天气条件
如果明天下雨,我会带伞。
条件状语从句的注意事项
1 谓语动词的形式
如果主句用一般现在时,从句的谓语动词不用将来时。
2 逗号的使用
条件状语从句如果位于主句前面,两者之间要用逗号隔开。
3 转换次序
条件状语从句和主句的次序可以颠倒,但须使用逗号,例如:“明天下雨,我就不去公 园。”
常用的条件状语从句
如果明天下雨,我就不去公 园。
条件状语从句的构成
1
条件词
如“如果”、“要是”、“非”或“假如”等
2
主语
主句和从句的主语一致
3
谓语
从句的谓语使用一般现在时或将来时,主句的谓语使用一般现在时、将来时或祈 使句形式
通过本课件,你将了解条件状语从句的定义、构成、用法、注意事项,了解 常用的条件状语从句,并学会将条件状语从句与其他句子结合使用。
条件状语从句的定义
定义
条件状语从句是一种从属从 句,表示主句发生的条件。 它以“如果”、“要是”、“非”或 “假如”等词开头。
句型
主句 + 条件状语从句
例句
如果...就...
如果你努力学习,你就会取得 好成绩。
要是...就...
要是你来,我就开心。
只要...就...
只要你有信心,你就能成功。
条件状语从句与其他句子的结合
1
因果关系
如果你好好学习,你就会取得好成绩。
2
假设结论
如果你不来,我你就一定会成功。
练习和测试
选择题
如果你认真准备,你就能通过考 试。
填空题
要是你明天忘了带铅笔,我会借 给你。
解答题
只要你努力学习,你就会进步。
表示天气条件
如果明天下雨,我会带伞。
条件状语从句的注意事项
1 谓语动词的形式
如果主句用一般现在时,从句的谓语动词不用将来时。
2 逗号的使用
条件状语从句如果位于主句前面,两者之间要用逗号隔开。
3 转换次序
条件状语从句和主句的次序可以颠倒,但须使用逗号,例如:“明天下雨,我就不去公 园。”
常用的条件状语从句
如果明天下雨,我就不去公 园。
条件状语从句的构成
1
条件词
如“如果”、“要是”、“非”或“假如”等
2
主语
主句和从句的主语一致
3
谓语
从句的谓语使用一般现在时或将来时,主句的谓语使用一般现在时、将来时或祈 使句形式
条件状语从句完整课件

如果主句是祈使句,条件状语从句 用于表达非真实或虚拟的情况。
如果主句是陈述句,条件状语从句 通常用于表达真实或可能的情况。
条件状语从句可以出现在主句前面 或后面,位置灵活。
例句和练习
1
如果你努力学习,你就会成功。
2
当天黑时,我们就回家。
3
假如下雨,我们将取消野餐。
常见错误
1 错误:如果你学习好,你就通过考试。
基本结构
1
如果 + 条件
主句
2
当 + 条件
主句
3
假如 + 条件
主句
常见的条件状语从句引导词
1 如果 (rúguǒ)
表示一种假设或前提情 况。
2 当 (dāng)
表示一种特定的条件下 发生的情况。
3 假如 (jiǎrú)
表示假设的情况,假设 成立则结果ห้องสมุดไป่ตู้立。
用法和注意事项
在条件状语从句中,谓语动词常用 现在时表示将来。
正确:如果你学习好,你就会通过考试。
2 错误:如果明天下雨,我就不去上学。
正确:如果明天下雨,我就不会去上学。
3 错误:如果我是你,我会买一辆车。
正确:假如我是你,我会买一辆车。
结论和要点
条件状语从句用于表示某种条件下发生的动作或情况。 常见的条件状语从句引导词包括如果、当和假如。 条件状语从句的位置灵活,可以出现在主句前面或后面。
条件状语从句完整课件
欢迎来到这个关于条件状语从句的完整课件。我们将深入探讨条件状语从句 的概念、基本结构、常见引导词、用法和注意事项,以及通过例句和练习来 加深理解。同时我们还会分享条件状语从句常见的错误。请准备好迎接这个 有趣而充实的学习旅程吧!
如果主句是陈述句,条件状语从句 通常用于表达真实或可能的情况。
条件状语从句可以出现在主句前面 或后面,位置灵活。
例句和练习
1
如果你努力学习,你就会成功。
2
当天黑时,我们就回家。
3
假如下雨,我们将取消野餐。
常见错误
1 错误:如果你学习好,你就通过考试。
基本结构
1
如果 + 条件
主句
2
当 + 条件
主句
3
假如 + 条件
主句
常见的条件状语从句引导词
1 如果 (rúguǒ)
表示一种假设或前提情 况。
2 当 (dāng)
表示一种特定的条件下 发生的情况。
3 假如 (jiǎrú)
表示假设的情况,假设 成立则结果ห้องสมุดไป่ตู้立。
用法和注意事项
在条件状语从句中,谓语动词常用 现在时表示将来。
正确:如果你学习好,你就会通过考试。
2 错误:如果明天下雨,我就不去上学。
正确:如果明天下雨,我就不会去上学。
3 错误:如果我是你,我会买一辆车。
正确:假如我是你,我会买一辆车。
结论和要点
条件状语从句用于表示某种条件下发生的动作或情况。 常见的条件状语从句引导词包括如果、当和假如。 条件状语从句的位置灵活,可以出现在主句前面或后面。
条件状语从句完整课件
欢迎来到这个关于条件状语从句的完整课件。我们将深入探讨条件状语从句 的概念、基本结构、常见引导词、用法和注意事项,以及通过例句和练习来 加深理解。同时我们还会分享条件状语从句常见的错误。请准备好迎接这个 有趣而充实的学习旅程吧!
初中英语条件状语从句课件
will go to Shanghai. • 2 He must come if he is told. • 3 Please let me know if he comes
back.
II:完成句子。 1.若主句为_______________, 则从句使用 _______________。 如果他穿牛仔裤,我们将不让他进去。
If 用法总汇
一 引导条件状语从句, 意为“如果”从句用一般时代替将来时
eg: If it rains tomorrow , we won’t go to Shanghai.
二 引导虚拟条件句。
结构:主语 would 动原,if 从句(过去时)(be一律用were) eg: If I were you,I would fly in the sky.
D. were; would pay
32.If I _____ the money, I would have bought a much bigger car.
A. possessed
B. owned
C. had
D. had had
一 用所给词的适当形式填空
1 If I _w_e_r_e__(be) a bird, I __w_o_u_l_d_f_l_y__(fly) in the blue
_____ ______ ______. 3.若主句为___________,则从句用______________. 如果你感到热,就打开窗窗户吧。
Open ______ _______ if you _______ _________.
• If 条件句的替代形式: • (1)祈使句 + and/or + 陈述句(谓语动
sky. 2)If
back.
II:完成句子。 1.若主句为_______________, 则从句使用 _______________。 如果他穿牛仔裤,我们将不让他进去。
If 用法总汇
一 引导条件状语从句, 意为“如果”从句用一般时代替将来时
eg: If it rains tomorrow , we won’t go to Shanghai.
二 引导虚拟条件句。
结构:主语 would 动原,if 从句(过去时)(be一律用were) eg: If I were you,I would fly in the sky.
D. were; would pay
32.If I _____ the money, I would have bought a much bigger car.
A. possessed
B. owned
C. had
D. had had
一 用所给词的适当形式填空
1 If I _w_e_r_e__(be) a bird, I __w_o_u_l_d_f_l_y__(fly) in the blue
_____ ______ ______. 3.若主句为___________,则从句用______________. 如果你感到热,就打开窗窗户吧。
Open ______ _______ if you _______ _________.
• If 条件句的替代形式: • (1)祈使句 + and/or + 陈述句(谓语动
sky. 2)If
条件状语从句完整课件(共14张PPT)
如果我们提出更优惠的条件,他就会在合同上签 字。
He won't be against us in the meeting providing (that) we ask for his advice in advance.
如果我们提前征求一下他的意见,他就不在会上 反对我们。
5. as ( so ) long as…. “只要…, 就… ” 表示 一种前提条件
I can tell you the truth on condition that you promise to keep a secret.
我可以告诉你真相,条件是你答应保守秘密。
You can pass the custom on condition that we have checked your luggage.你可以通过 海关,但条件是我们得检查完你的行李。
If +虚拟条件句,
1. If I were you,I would invite him to the party.
如果我是你,我会邀请他参加聚会。 I would have arrived much earlier if I had
not been caught in the traffic. 要不是交通堵塞,我本会来得早一些。 If it should be true, it would be silly to
down. 如果你考试不及格,你会让他失望的。
如果你作业做完了就可以回家了。 If you have finished the homework, you
can go home.
1. If 从句 (一般现在时), 主句 ( 一般现在时 )
表示科学常识,说明, 经常性的动作,倾向 自动会发生的事
He won't be against us in the meeting providing (that) we ask for his advice in advance.
如果我们提前征求一下他的意见,他就不在会上 反对我们。
5. as ( so ) long as…. “只要…, 就… ” 表示 一种前提条件
I can tell you the truth on condition that you promise to keep a secret.
我可以告诉你真相,条件是你答应保守秘密。
You can pass the custom on condition that we have checked your luggage.你可以通过 海关,但条件是我们得检查完你的行李。
If +虚拟条件句,
1. If I were you,I would invite him to the party.
如果我是你,我会邀请他参加聚会。 I would have arrived much earlier if I had
not been caught in the traffic. 要不是交通堵塞,我本会来得早一些。 If it should be true, it would be silly to
down. 如果你考试不及格,你会让他失望的。
如果你作业做完了就可以回家了。 If you have finished the homework, you
can go home.
1. If 从句 (一般现在时), 主句 ( 一般现在时 )
表示科学常识,说明, 经常性的动作,倾向 自动会发生的事
08454_条件状语从句教学课件
3
定义及作用
2024/1/26
定义
条件状语从句是表达某种假设条 件或条件的从句,通常引导词有 if, unless, as long as等。
作用
条件状语从句在句子中起到表达 条件、假设、限制等作用,使得 主句的意思更加明确和具体。
4
分类:时间、原因、条件、让步
时间条件状语从句
表达某个时间或时段内发生的条件,如“If you come tomorrow, we will have a meeting.”( 如果你明天来,我们将开会。)
表示“万一”,引导条件 状语从句,从句可用一般 现在时或一般过去时。
表示“假如/如果”,引导 条件状语从句。
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语气和情态动词选择
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01
在原因条件状语从句中,通常使 用陈述语气,表示假设的条件。
02
情态动词在原因条件状语从句中 也有一定的使用,如“can”、 “could”、“may”、 “might”等,表示可能性或推 测。
As she sang, she danced. (她一边 唱歌,一边跳舞。)
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Whenever he has time, he will help me with my studies. (无论他 什么时候有空,他都会帮我学习。)
While I was reading, he called me. (当我在阅读的时候,他打电话给我 。)
含义和用法。
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学习困难分析
部分学生在理解和运用虚拟语气方 面存在困难,需要进一步加强相关 练习和指导。
后续学习建议
建议学生继续巩固和加深对条件状 语从句的理解,通过多读、多写、 多听等方式提高语言运用能力。
初中英语条件状语从句课件
VS
省略形式
在条件状语从句中,有时可以省略主语和 动词be的形式,特别是在主句和从句的 主语相同的情况下。例如,“If (it is) raining, we will stay at home.”(如果 下雨了,我们会待在家里。)
虚拟语气特点
• 虚拟语气:在条件状语从句中,有时可以使用虚拟 语气来表达与事实相反的情况或不可能发生的情况 。例如,“If I were you, I would go to the party.”(如果我是你,我会去参加聚会。)
翻译不准确或语法错误
总结词
翻译不准确或语法错误是学生使用条件状语从句时经常出现的问题。
详细描述
学生在翻译条件状语从句时,可能受到母语影响,导致翻译不准确;或者在 构建句子时出现语法错误。
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初中英语条件状语从句练习及解析
典型例题解析
例题1:分析句子结构 例题2:填空题
例题3:翻译题
学生常犯错误及纠正方法
时间状语从句
表示动作发生的时间,常常由when, while, as, before, after, since, until等引导。
条件状语从句
表示动作发生的条件,常常由if, unless, as long as等引导。
让步状语从句
表示动作发生的让步条件,常常由though, even if, even though等引导。
特点
条件状语从句通常由if引导,表示一种假设或条件,对主句的 动作或状态进行限定或修饰。
类型与分类
类型
条件状语从句可以根据所表达的条件的不同,分为真实条件状语从句和非真 实条件状语从句。
分类
真实条件状语从句表达的是现实中可能发生或已经发生的情况,而非真实条 件状语从句则表达的是虚拟、假设的情况。
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If you don’t clean your teeth regularly, you will have toothache Unless you clean your teeth regularly, you will have toothache
2. get very hot, put the air-conditioner on soon
Eg: You will be late for school unless you leave now. You will be late for school if you don’t leave now.
Unless sentences exercises
1. have toothache, clean your teeth regularly
2. If he __p_as_s_e_s (pass) the test ,we may_b_u_y_ (buy) a car.
3.Get up early, not be late
If you get up early, you won’t be late .
4.Take a fish out of water, die
Pair work
If you stay at home, you will be sorry.
If you work until night, you will be tired.
If we break the traffic rules, we will get a fine and even be in danger.
If it is fine tomorrow, we will go on a school trip. we will climb mountains.
If I study hard, I will go to Beijing University.
If I have enough money,
I will travel around the world.
If you have a robot, what will you do?
Example: If I have a robot, I will let it…
▪ play games
▪ clean my bedroom ▪ do homework for me
主句(一般现在时) 从句(一般现在时)
Can ‘if’ be replaced by other words?
相当于when从句
Exercises: change the following sentences into if sentences
1. If she _re_t_u_rn_s_(return) from Paris, please _c_a_ll_(call) me.
4.We w__il_l _h_a_ve(have) a barbecue unless it _r_a_in_s__ (rain) .
5.If you _c_o_o_l (cool) water, it _t_u_r_n_s(turn) into ice.
1.If you _d_r_o_p__ (drop) a glass, it _b_r_e_a_k_s(break).
2.He w__il_l _fa_i_l (fail) in the exam if he _d_oe_s_n_’_t study (not study) hard.
3.Unless you _l_e_a_v_e_ (leave) now, you _w_i_ll_b__e(be) late.
If sentences
A:actions having results that will probably happen
(1) If sb does sth, sb will do sth
= sb will do sth if sb does sth
主句(将来时)
从句(一般现在时)
(2)主句为祈使句或情态动词形式 If sb does sth, please do sth
If sb does sth, sb may(情态动词) do sth
If sentences
B:actions having results that will certainly happen
主语的行为将导致某种必然发生的结果时
If sb does sth, sb/sth h if sb does sth
初中英语条件状语从句优秀课 件
Look and say
If the telephone rings, I will answer it.
If you get up late, you will be late for school.
If you feel hungry, you should eat something.
If you don’t put the air-conditioner on soon , you will get very hot.
Unless you put the air-conditioner on soon , you will get very hot.
More practice
If you feel tired, you must have a rest.
If you are ill, you must go to see a doctor.
If you are riding a bike in the street, you must be very careful.
If you take a fish out of water, it dies.
5.Heat metal, melt
If you heat metal, it melts
条件状语丛句只有if…sentenses一种吗?
C:Unless: sb will do sth unless sb does sth if sb does not do sth
2. get very hot, put the air-conditioner on soon
Eg: You will be late for school unless you leave now. You will be late for school if you don’t leave now.
Unless sentences exercises
1. have toothache, clean your teeth regularly
2. If he __p_as_s_e_s (pass) the test ,we may_b_u_y_ (buy) a car.
3.Get up early, not be late
If you get up early, you won’t be late .
4.Take a fish out of water, die
Pair work
If you stay at home, you will be sorry.
If you work until night, you will be tired.
If we break the traffic rules, we will get a fine and even be in danger.
If it is fine tomorrow, we will go on a school trip. we will climb mountains.
If I study hard, I will go to Beijing University.
If I have enough money,
I will travel around the world.
If you have a robot, what will you do?
Example: If I have a robot, I will let it…
▪ play games
▪ clean my bedroom ▪ do homework for me
主句(一般现在时) 从句(一般现在时)
Can ‘if’ be replaced by other words?
相当于when从句
Exercises: change the following sentences into if sentences
1. If she _re_t_u_rn_s_(return) from Paris, please _c_a_ll_(call) me.
4.We w__il_l _h_a_ve(have) a barbecue unless it _r_a_in_s__ (rain) .
5.If you _c_o_o_l (cool) water, it _t_u_r_n_s(turn) into ice.
1.If you _d_r_o_p__ (drop) a glass, it _b_r_e_a_k_s(break).
2.He w__il_l _fa_i_l (fail) in the exam if he _d_oe_s_n_’_t study (not study) hard.
3.Unless you _l_e_a_v_e_ (leave) now, you _w_i_ll_b__e(be) late.
If sentences
A:actions having results that will probably happen
(1) If sb does sth, sb will do sth
= sb will do sth if sb does sth
主句(将来时)
从句(一般现在时)
(2)主句为祈使句或情态动词形式 If sb does sth, please do sth
If sb does sth, sb may(情态动词) do sth
If sentences
B:actions having results that will certainly happen
主语的行为将导致某种必然发生的结果时
If sb does sth, sb/sth h if sb does sth
初中英语条件状语从句优秀课 件
Look and say
If the telephone rings, I will answer it.
If you get up late, you will be late for school.
If you feel hungry, you should eat something.
If you don’t put the air-conditioner on soon , you will get very hot.
Unless you put the air-conditioner on soon , you will get very hot.
More practice
If you feel tired, you must have a rest.
If you are ill, you must go to see a doctor.
If you are riding a bike in the street, you must be very careful.
If you take a fish out of water, it dies.
5.Heat metal, melt
If you heat metal, it melts
条件状语丛句只有if…sentenses一种吗?
C:Unless: sb will do sth unless sb does sth if sb does not do sth