人教版八年级英语上册第十单元IF引导的条件状语从句
10.He _w__il_l _w_a_t_c_h(watch) TV ,if he ___is___(be) free.
1.I’m sure if he g_o_e_s__(go) to the party, he_w__ill_h_a_v_e_ (have) a great time.
2.If the rain __st_o_p_s_(stop) tonight, we will go to the cinema.
条件，即“在…条件下，某事才能发生”，在句子中充当状 语，因此称之为条件状语从句。（ If 引导的条件状语从句表 示假如有从句的动作发生，就会有主句动作的发生 ）
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
eg:如果我有足够的钱，我就去环游世界。
If I have enough money, I will travel around the world .
=I will travel around the world if I have enough money.
If条件句：条件句用于陈述语气，表示假设的情况可能发生， 其中 if 是“如果”的意思。 主句一般将来时 ，从句用一般现在时。
构 成
条件从句
主句
时 态
If＋一般现在时
主语＋shall/will+动词原形
如果你作业做完了就可以回家了。 If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。
3. 如果主句是祈使句，从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
状语从句
If 引导的条件状语从句
• 什么是状语？
He speaks English very well.
（动词）
（程度副词）
主语 谓语 宾语
状语
You are very beautiful.
（形容词）
用来修饰动词，形容词，副词
以及全句的句子成分，叫做状 语。用作状语的通常是副词，介
词短语，不定式和从句等。
2.如果主句含有must, may, can 等情态动词，从句也要用
一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red.
If you finish the homework， you can go home．
4。如果你经常听英文歌，你将会喜欢英语
If you often _lis_t_e_n _t_o_English songs, you_w_i_ll_l_ik_e_
English.
1.If he___d_o_e_s_n_’t_d_o__ (not, do it ), I____w_i_ll__d_o__(do) it. 2.If you _a_r_e_ (be) late for school ,my teacher ___w_i_ll_b_e_(be) angry. 3 If she__w_i_n_s___ (win) the prize ,we _w__il_l_b_e_(be) happy. 4.If I __d_o_n_’t_e_a_t_ (not, eat )so much ,I __w_i_ll__g_et__(get) thinner. 5.If you _t_e_ll___(tell) them, they __w_o_n_’_t__b_el_i_ev_e_ (not, believe) you. 6 I _w__il_l_s_ta_y__(stay) at home,If it __r_a_in_s_____( rain). 7.If it _d_o_e_s_n_’t_r_a_i_n__( not, rain) ,I _w_i_ll_g_o____( go) out. 8. we _w__il_l _p_la_y___(play) football, If it is _s_u_n_n__y_(sun) . 9.If she ____b_e_c_o_m__e(sbecome) a star ,her parents __w_o_n_’_t _s_e_n_d__ (not,send) her away
状语从句
在复合句中表示的状语
可以用来修饰谓语（包括非谓语 动词）、定语、状语或整个句子。
状语从句 分类
1时间状语从句
6让步状语从句
2地点状语从句
7比较状语从句
3原因状语从句
8方式状语从句
4条件状语从句
9结果状语从句
5目的状语从句
If 引导条件状语从句
定义：If “如果, 假如” 它引导的句子表示某事发生所需的
Please call me if he comes next Sunday.
If 引导的条件状语从句的基本用法:
主句 一般将来时
祈使句：
1。如果她早点儿起床，就有时间在家里吃早餐
If she_g_e_ts_ _u_p__a little earlier, she’ll have time to
eat breakfast at home.
2。如果你参加聚会，你将会过得很开心。
If you_jo_i_n_ the party ,you_w_i_ll__ _h_a_ve_ a great time.
3。如果明天下雨，我们将不去野餐
If it _r_a_i_n_s_tomorrow, we w__o_n_’_t _g_o__ for a picnic.
例 句
If he comes,
he will take us to the zoo.
1. 如果主句是一般将来时，从句则用一般现在时。
If it rains（从句）， I will stay at home. I’ll go with you if you don’t want to go alone（从句）.
1.I’m sure if he g_o_e_s__(go) to the party, he_w__ill_h_a_v_e_ (have) a great time.
2.If the rain __st_o_p_s_(stop) tonight, we will go to the cinema.
条件，即“在…条件下，某事才能发生”，在句子中充当状 语，因此称之为条件状语从句。（ If 引导的条件状语从句表 示假如有从句的动作发生，就会有主句动作的发生 ）
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
eg:如果我有足够的钱，我就去环游世界。
If I have enough money, I will travel around the world .
=I will travel around the world if I have enough money.
If条件句：条件句用于陈述语气，表示假设的情况可能发生， 其中 if 是“如果”的意思。 主句一般将来时 ，从句用一般现在时。
构 成
条件从句
主句
时 态
If＋一般现在时
主语＋shall/will+动词原形
如果你作业做完了就可以回家了。 If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。
3. 如果主句是祈使句，从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
状语从句
If 引导的条件状语从句
• 什么是状语？
He speaks English very well.
（动词）
（程度副词）
主语 谓语 宾语
状语
You are very beautiful.
（形容词）
用来修饰动词，形容词，副词
以及全句的句子成分，叫做状 语。用作状语的通常是副词，介
词短语，不定式和从句等。
2.如果主句含有must, may, can 等情态动词，从句也要用
一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red.
If you finish the homework， you can go home．
4。如果你经常听英文歌，你将会喜欢英语
If you often _lis_t_e_n _t_o_English songs, you_w_i_ll_l_ik_e_
English.
1.If he___d_o_e_s_n_’t_d_o__ (not, do it ), I____w_i_ll__d_o__(do) it. 2.If you _a_r_e_ (be) late for school ,my teacher ___w_i_ll_b_e_(be) angry. 3 If she__w_i_n_s___ (win) the prize ,we _w__il_l_b_e_(be) happy. 4.If I __d_o_n_’t_e_a_t_ (not, eat )so much ,I __w_i_ll__g_et__(get) thinner. 5.If you _t_e_ll___(tell) them, they __w_o_n_’_t__b_el_i_ev_e_ (not, believe) you. 6 I _w__il_l_s_ta_y__(stay) at home,If it __r_a_in_s_____( rain). 7.If it _d_o_e_s_n_’t_r_a_i_n__( not, rain) ,I _w_i_ll_g_o____( go) out. 8. we _w__il_l _p_la_y___(play) football, If it is _s_u_n_n__y_(sun) . 9.If she ____b_e_c_o_m__e(sbecome) a star ,her parents __w_o_n_’_t _s_e_n_d__ (not,send) her away
状语从句
在复合句中表示的状语
可以用来修饰谓语（包括非谓语 动词）、定语、状语或整个句子。
状语从句 分类
1时间状语从句
6让步状语从句
2地点状语从句
7比较状语从句
3原因状语从句
8方式状语从句
4条件状语从句
9结果状语从句
5目的状语从句
If 引导条件状语从句
定义：If “如果, 假如” 它引导的句子表示某事发生所需的
Please call me if he comes next Sunday.
If 引导的条件状语从句的基本用法:
主句 一般将来时
祈使句：
1。如果她早点儿起床，就有时间在家里吃早餐
If she_g_e_ts_ _u_p__a little earlier, she’ll have time to
eat breakfast at home.
2。如果你参加聚会，你将会过得很开心。
If you_jo_i_n_ the party ,you_w_i_ll__ _h_a_ve_ a great time.
3。如果明天下雨，我们将不去野餐
If it _r_a_i_n_s_tomorrow, we w__o_n_’_t _g_o__ for a picnic.
例 句
If he comes,
he will take us to the zoo.
1. 如果主句是一般将来时，从句则用一般现在时。
If it rains（从句）， I will stay at home. I’ll go with you if you don’t want to go alone（从句）.
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Uni10 if 引导条件状语从句 课件 人教版英语八年级上册
4.Hurry up if you _d_o_n_’t__w_a_n_t(not want) to be late.
Look and say
you
get up late
If you get up late, you’ll be late for school.
late for school
I我
If I have a lot of money, I will buy a big house.
Translation:
如果我有足够的钱，我就去环游世界。
If I have enough money, I will travel around the world.
=I will travel around the world if I have enough money.
Read and summarize 读下列例句，总结if的用法
If you study hard, you’ll pass the exam. =Study hard, and you’ll pass the exam.
If you don’t hurry up, you’ll be late. = Hurry up, or you will be late.
Please call me if he comes next Sunday.
用法三：主句是祈使句，从句 也要用一般现在时。 （主祈从现）
Exercises： 1.I _w_il_l _s_t_a_y_(stay ）at home if Lucy _co_m__e_s （come） tomorrow.
If you want to lose weight, you must eat less bread.
Look and say
you
get up late
If you get up late, you’ll be late for school.
late for school
I我
If I have a lot of money, I will buy a big house.
Translation:
如果我有足够的钱，我就去环游世界。
If I have enough money, I will travel around the world.
=I will travel around the world if I have enough money.
Read and summarize 读下列例句，总结if的用法
If you study hard, you’ll pass the exam. =Study hard, and you’ll pass the exam.
If you don’t hurry up, you’ll be late. = Hurry up, or you will be late.
Please call me if he comes next Sunday.
用法三：主句是祈使句，从句 也要用一般现在时。 （主祈从现）
Exercises： 1.I _w_il_l _s_t_a_y_(stay ）at home if Lucy _co_m__e_s （come） tomorrow.
If you want to lose weight, you must eat less bread.
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.
人教版英语八年级上册Unit10名师指导：if引导的条件状语从句
名师指导：if引导的条件状语从句引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。
如：If you ask him，he will help you．如果你请他帮助，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework，you can go home．如果你作业做完了就可以回家了。
另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：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。
另外你还要注意if 条件句的时态搭配1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time. 如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/canIf the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。
If it stops snowing we can go out. 如果雪停了，我们就可以出去。
3．if从句用一般现在时，主句用must/shouldIf you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。
人教八上unit10 if引导的条件状语从句(共14张PPT)
知识点巩固
If you exercise every day, you_____ heathy.
A. will
B. can keep
C. can
D.will can keep
课程小结
if引导的条件状语从句
主句 一般将来时 有情态动词
祈使句
if从句 一般现在时 一般现在时 一般现在时
时态规律 主将从现 主情从现 主祈从现
主句在前，主从句中间不__需__要__逗号隔开；如果 从句在前，主从句之间需要用__逗__号___隔开。
知识点巩固
I__w__il_l_f_ly___(fly) to Australia if there is a holiday this summer.
知识点巩固
If you miss your parents, just_b_u_y__(buy) a ticket and fly back.
if引导的条件状语 从句的用法
课程目标
掌握if引导的条件 状语从句的用法
知识点导入
If she has free time,she will help her mum do housework.
知识点导入
If my father is free, he will go camping with me.
知识点导入
If it doesn’t rain this weekend, we will have a picnic.
知识点小结
If she has free time, she will help her mum do
housework.
If my father is free, he will go camping with me.
Unit10if条件状语从句课件人教版英语八年级上册
用法2：如果主句含有must, may, can 等情态动词，从 句也要用一般现在时。
She is going to walk to school.
Shes to school, she m__u_s_t_ _b_e_late.
用法3：如果主句是祈使句，从句同样要用一般现在时。
It will be sunny tomorrow.
Let’s have a trip tomorrow.
If it __is__ sunny tomorrow, Let’s __h_a_v_e_ a trip.
If引导条件状语从句，遵循：
主将从现 主祈从现 主情从现
一、用括号内所给单词的正确形式填空。 have
___________________________.
If it is sunny this weekend, what won’t you do ?
If it is sunny this weekend, I ___w_o_n_’_t_s_t_a_y__a_t_h_o__m_e__.
If it is sunny this weekend, I _w__o_n_’_t _w_a__tc_h__t_e_le__v_is_i_o_n_.
If I have time, I’ll go to see you. I’ll go to see you if I have time.
从主有逗 主从无逗
最常用的引导词有:
• if 如果 • unless (= if not) 除非 • as long as 只要
1. If you want to know, I can tell you.
英语中考语法复习
If条件状语从句
人教版八年级英语上册第十单元IF引导的条件状语从句
If I’m ill, _I_w_i_ll_s_e_e__a_d_o_c_t_o_r___.
If I’m late, _I_w_i_ll_s_a_y__so_r_r_y_____.
Look and say
If I’m hungry,
I will_e_a_t_s_o_m_e__fo_o_d___.
If I’m tired,
2.You may __p_a_s_s_ (pass) the exam if you _s_tu_dy (study) hard. 3. If you want to record, __p_r_e_ss___(press)
the red light.
用括号内所给词的正确形式填空
1.If the rain __s_to_p__s_(stop) tonight, we will go to the cinema. 2.I’ll buy a computer if I _h_a_v_e__(have) enough money.
Please call me if he comes next Sunday.
If 引导的条件状语从句的基本用法:
主句 一般将来时
祈使句 含情态动词
从句 一般现在时 一般现在时 一般现在时
练一练：
1。如果她早点儿起床，就有时间在家里吃早餐
If she_g_e_ts_ _u_p__a little earlier, she’ll have time to
her.
5.I want to know if he __c_o_m__e_s__(come) tomorrow, if he _w_i_l_l _c_o_m__e__(come), I _w__il_l_g_i_v_e__(give) the massage to
人教八上 Unit10 if条件状语从句专项讲解 课件
If we ask people to bring food, they'll just bring 4
potato chips and chocolate.
考向一 “主将从现”原则。 if引导条件状语从句时，主句是一个一般将来时 的句子，从句用一般现在时，我们称之为“主 将从现”原则。
考向二 if引导条件状语从句时，主句可以是含有must, may, can等情态动词的句子。
if引导宾语从句时，翻译为“是否”， 时态要根据句子具体情况而定。
Thanks for your listening
A. gets; misses
B. gets; will miss
C. will get; misses
D. will get; will miss
归纳总结： 1 在if引导的条件状语从句中，从句为一般现在时。
主句有三种形式：一般将来时、含有情态动词、祈使句。
2 if引导条件状语从句时，翻译为“如果”， 时态为一般现在时。
A. knew
B. will know
C. doesn’t know
D. didn’t know
2. —Celia, join us in the Super Summer Camp if it ___B____ this weekend.
—I’d love to. But nobody can know if it________ .【咸宁】【if引导状语从句】
我不知道明天他是否来学校。
（宾语从句）
★①判断从句成分(宾语/状语)
★②判断中文意思
★③时态根据句子具体情况分析
If you come to my home, I'll show you the photos.
人教版八年级上册if条件状语从句
stay up late
feel sleepy in class
If you stay up late, you’ll feel sleepy in class.
eat too much junk food get fatter and fatter If she eats too much food, she will get fatter and fatter.
Clap your hands. If you‘re happy and you know it,
Stomp your feet. If you‘re happy and you know it, Then your face will surely show it If you’re happy and you know it,
8. Mary will hurt (hurt) your teeth if she eats（eat）too much candy.
9. Everyone must dress up. If you don’t (not), they won’t let you in.
10. What will happen (happen) if he arrives (arrive) late?
grades. ➢ Study hard, or you won’t get good grades. (Unless you study hard…)
➢ Look & say
have lots of money travel around the world If I have lots of money, I will travel around the world.
人教八上Unit 10 条件状语从句 讲解(PPT24张)
变换：
1.有if引导的条件状语从句的复合句中，当主句和从句的 主语均为you时，可转换为“祈使句，and+简单句”或 “祈使句，or+简单句”
You can pass the exam if you work hard.
Work hard ，and you will pass the exam.
If you don't hurry up,you will be late again.
A. isn’t rain B. rain C. won’t rain D. doesn’t rain
10. What will you do if you __A___ to Beijing?
A. go B. went C.going D. will go
注意事项 1. 在if引导的条件状语从句中，当主句是一般将
2. if 条件状语从句中，如果主句有 must，can，may 等情态动词，从
句用_一__般__现__在_时___。“主情从现”
You must stop if the traffic light __is__ (be) red.
If you feel hungry, you should eat something. If you feel tired, you must have a rest.
Put up your hands if you h__a_v_e_ (have) any questions.
4 1.If I ____c_o_p_y___(copy ) your homework ,
I will cheat myself .
2. If she _d_o_e_s_n_’t_g_e_t______(not get ) up early , she’ll miss the early bus .
八年级英语Unit 10 语法点If 引导的条件状语从句
单元语法讲练专题语法精讲：If 引导的条件状语从句一．if引导的条件状语从句含义：条件状语从句表示主句动作发生的前提、条件、假想、推测等情况。
位置：if引导的条件状语从句可放在主句后，也可放在主句前（必须用逗号隔开）。
时态：当主句是一般将来时，从句用一般现在时表示将来。
主句从句例句主句是一般将来时从句时态应用一般现在时He will come here on time if it doesn't rain.如果不下雨，他会按时到达这儿。
主句是祈使句Please stay at home if it rains tomorrow. 如果明天下雨，请留在家里。
主句的谓语含有can,may,must等情态动词If you like,you can stay here for the weekend.你如果愿意，可以留在这里过周末。
主句的谓语是hope, wish,want等动词I want to go there if the rain stops.如果雨停了，我想去那儿。
二．if引导的条件状语从句遵循主过从过、主将从现的原则。
（1)主过从过。
If he got up earlier, he would not be late yesterday.如果昨天他早点起床，就不会迟到了。
（2)主将从现。
①If it rains tomorrow, I won't climb the hills.如果明天下雨，我就不去爬山。
②If it doesn't rain tomorrow, I will climb the hills.如果明天不下雨，我就去爬山。
（3)主祈（祈使句）从现。
Climb the hills with me if it doesn't rain tomorrow.如果明天不下雨，和我去爬山吧。
（4)主情（情态动词）从现。
If it doesn't rain tomorrow, I might climb the hills.如果明天不下雨，我可能会去爬山。