七年级下册U5-U7各个话题知识要点

1 七年级下册U5-U7各个话题知识要点 Unit 5 Topic1 重点语法 一般现在时（常与频度副词never, seldom, sometimes, often,usually, always等连用）

重点句型 —How do you usually come to school?

—I usually come to school by subway. —How often do you go to the library? —Once/Twice/Three times a week/Very often/Every day/Sedom 重点详解 1 I always come to school by bus. by+交通工具名称，表示使用某种交通方式，中间不加限定词，如果交通工具前有a, the, my 等限定词，就不能用by,而是用in或是on. on the train=by train on his bike=by bike in my car=by car. 巧辩异同 on foot 与 walk on foot “走路”，是介词短语，不能作谓语，只作方式状语，位于句末。walk “走路”,是动词，可以作谓语。 go to…on foot= walk to I often go to school on foot. =I often walk to school. 同样，go to….by bike = ride a bike to go to…. by car = drive a car to go to … by plane = fly to go to… by bus = take a bus to 2 Come on! It’s time for class. come on “快点，加油，来吧”。 It’s time for sth. “该做某事了”，与 It’s time to do sth.意思一样。 3 look的短语 look the same看起来一样 look like看起来像…… look for寻找 look after 照顾 4 do my homework at school 在学校做作业 do one’s homework 做家庭作业（注意：one’s 要随主语的变化而变化，常用形容词性物主代词my, your, their, our, his, her等）。 5 we want to．．．．．． know about．．．．．．．．． the school life of American students. 我们想了解一下美国学生的学校生

活。 want to do sth. “想做某事”，want 后接动词不定式作宾语。 know about “了解，知道关于…”。 6 巧辩异同 a few与few a few “一些”，few“很少，几乎没有”，修饰可数名词。

a little与little a little“一些”，little“很少，几乎没有”，修饰不可数名词。 7 They often play basketball or coccer, go swimming．．．．．．．．．． and so on．．．．．．．.

go swimming 去游泳 and so on “等等”，表示还有很多。 拓展 go+v.-ing 表示去做某事，类似的有： go fishing 去钓鱼 go shopping 去买东西 go boating 去划船 go skating 去滑冰 8 How often do you go to the library? 你多久去一次图书馆？ how often“多久一次”，问频率。答语常用频度副词never, always,often等或单位时间内的次数once a week一周一次 twice a month每月两次three times a year每年三次 语法讲解 一般现在时

一般现在时表示： 2

（1）现在所处的状态。Jane is at school. （2）经常或习惯性的动作。I often go to school by bus. （3）主语具备的性格和能力。He likes playing football. （4）客观真理。The earth goes round the sun. 常用的时间状语：often, always, usually, sometimes, every day等等。 行为动词的一般现在时，助动词是do/don’t和does/doesn’t.当主语是第一、二人称和所有复数形式时，行为动词用原形。 肯定式：I go to school on foot. 否定式：I don’t go to school on foot. 疑问式：Do you go to school on foot? —Yes, I do. —No, I don’t. 当主语是第三人称单数时，动词用第三人称单数形式，在词尾加-s或-es。 肯定式：He goes to work by bus. 否定式：He doesn’t go to work by bus. 疑问式：Does he go to work by bus? —Yes, he does. —No, he doesn’t.

Topic2 重点语法 现在进行时态。

重点句型 What are you doing? He is cleaning the dormitory.

Are you doing your homework? Yes, I am./No, I am not. How long can I keep them? Two weeks. 重点详解 1 at the moment“此刻，现在”,相当于now. 2 巧辩异同 go to sleep与go to bed ① go to bed“上床”“就寝”I often go to bed at ten. ② go to sleep“入睡”“睡着”Last night I went to sleep at two o’clock. 3 巧辩异同some, a few 与a little “一些，有些”三者都修饰名词。 some既可以修饰可数名词又可以修饰不可数名词。 We want some apples and some water. a few用在可数名词复数之前，a little用在不可数名词之前。 There are a few books and a little waterin the classroom. 4 与how相关的短语 how often多常 how many多少 how much多少钱 how old多大

5 And you must return them on time.你必须按时归还它们。Return意为“归还，回归”

① return sth. to sb.把某物归还某人=give back sth. to sb. ② return to“回到…”，相当于come back to… 6 Maria and a girl are talking at the lost and found. talk“交谈”，常用的短语talk to/with sb.“与某人交谈” 巧辩异同talk, say, speak与tell (1) talk“交谈”，表示通过谈话方式交换意见、消息等。 (2) speak“说话”，强调开口发声，后常接某种语言。 (3) say “说”，强调所说的话的内容。 (4) tell“告诉”，有时兼含“嘱咐”“命令”等。tell a truth说真话，tell a lie说谎, tell a story 讲故事等固定搭配。 7 I can’t find．．．． my purse and I am looking for．．．．．．．．．． it. look for“寻找”，强调寻找的过程； find“找到” 3

强调找的结果。 8 look(at), see与 read look(at)指看的动作，see指看的结果，read常指看书、看报纸等。 9 Here are some photos of his.这有他的一些照片。 photos of his是双重所有格。his是名词性物主代词，后还可以接名词所有格。a friend of mine我

的一个朋友 a classmate of my brother’s我弟弟的一个同学 10 I also want to go there one day.我也希望有一天到那儿。 also意为“也”，常用于be动词和情态动词后面，实义动词的前面。 巧辩异同 also与too also放在句中，too用于句末。 语法讲解 现在进行时 1.现在进行时表示：现在正在进行或发生的动作。 2.常用的时间状语：now, at the moment, look, listen等。 3.谓语动词构成：be(am/is/are)+v.-ing形式。 4.动词的-ing形式构成： 规 则 原 形 -ing形式 一般在动词原形末尾加-ing do go doing going 以不发音的字母e结尾的动词，先去掉e，再 加-ing make dance making dancing 以重读闭音节结尾的动词，如末尾只有一个辅音字母，应双写出这个字母，再加-ing swim run swimming running 5.现在进行时态的肯定、否定和疑问式。 （1）肯定式：I am running. You are running. He/She is running.

（2）否定式：I’m not running. You aren’t running. He/She isn’t running.

（3）一般疑问句及回答：—Are you running? —Yes, I am./—No, I am not.

—Is he/she running? —Yes, he/she is./ —No. he/she isn’t.

Topic3 重点语法 一般现在时和现在进行时的使用和异同。

重点句型 What day is ti today? It’s Wednesday.

Why do you like it? it’s easy and interesting. What class are they having? They are having a music class. 重点详解 1 询问星期几用What day…？回答：It’s Wednesday/Sunday…。 与特殊疑问句词what有关的短语： what class什么班 what color什么颜色 what time几点 what date几号（日期） 2 How many lessons does he have every weekday? How many+可数名词的复数形式；How much+不可数名词。 3 一个星期的第一天是Sunday, 在星期几前用介词on, 在具体点钟前用at. 4 learning about．．．．．．．．．．．．． the past了解过去 learn about了解