1、Unit 4 Then and now重难点讲解 (含答案)一、 词汇讲解1. use 动词，意为“使用”He used the telephone at home and in the office to call people.他用家里和办公室的电话机给人打电话。 (1) 考点：use sth. to do sth. 用.做= do sth. with sth. 例如：We use water to wash hands.我们用水洗手。 =We wash hands with water.(2) 【拓展】use和with都有用的意思，use是动词，with是介词，用法不同“和” I pla
2、yed football with my brother last Sunday. with的用法: “长着” The boy with a big nose is my brother. “拥有” I have a new house with a big garden. “用” Make a sentence with “egg”. 注：句中有谓语动词时，选介词“with”表示用，句中无谓语动词时，选动词“use”。【小试牛刀1】 Mr White (use) the telephone (call) people. My father (use) a mobile phone (call
3、) (I) just now. Who can make a sentence (use/with) this new word? They (use/with) paper to make a T-shirt.【答案】1.uses, to call 2.used, to call, me 3.with 4.use2. write sb. a letter写信给某人Mr Brown wrote letters to his friends.布朗先生给他的朋友们写信。(1) 考点：write sb. a letter写信给某人= write (a letter) to sb. 例如：I ofte
4、n write my e-friends a letter. 我经常写信给我的网友。=I often write a letter to my e-friends. 注：write的过去式是wrote【小试牛刀2】 翻译：我的妈妈十年前写信给她的朋友。 Mr Green is writing a letter his friend the office.A.to; at B.for; in C.to; in -What did you do yesterday? -I a letter at home.A.writed B.am writing C.wrote【答案】1.My mother w
5、rote letters to her friends ten years ago.或My mother wrote her friends letters ten years ago. 2.C 3.C二、 重难点讲解1. Six years ago, Mike could read and draw, but he could not write.六年前，迈克会阅读和画画，但是他不会写字。解析：(1) could是情态动词 can的过去式，用于谈论某人过去拥有的能力，其后接动词原形。它的否定形式是在 could后面加上not,可以缩写成couldnt。(2) could还可以表示许可或同意，
6、指委婉客气地提出问题或陈述看法。【例句】(1) Could you speak English then? 那时候你会说英语吗?(2) Could I borrow your computer? 我可以借用你的电脑吗?【练习】单项选择。( )(1) Little Tom could not the piano last year.A. play B. plays C. playing( )(2) Su Hai look after herself when she was a child.A. cannot B. can C. could【答案】(1)A (2)C2. Twenty years
7、 ago, Mr Brown wrote letters to his friends.二十年前，布朗先生写信给他的朋友们。解析：wrote 是 write的过去式形式。write(a letter/letters) to sb意为“写信给某人”相当于write sb a letter/letters。【例句】George wrote some letters to his friends.=George wrote his friends some letters.乔治写了一些信给他的朋友们。【练习】单项选择。( ) Su Hais mother a letter to her friend
8、 last weekend.A. writes B. wrote C. writing【答案】B3. He used the telephone at home and in the office to call people.他在家以及办公室里用电话打电话给人们。解析：used是 use的过去式形式。useto do sth意为“用去做某事”,带 to的动词不定式在此处表示目的。【例句】Johns little sister can use a painting brush to draw pictures.约翰的小妹妹会用画笔画画。【练习】用所给词的适当形式填空。Mike uses the
9、 computer (write) music.【答案】to write4. She bought things from shops. 她(过去)从商店买东西。解析：bought 是 buy的过去式形式。buy from 意为“从买”。表示“买某物给某人”则用短语buy sth for sb,相当于buy sb sth。【例句】(1) Mrs Johnsons son often buys toys from the toy shop.约翰逊太太的儿子经常从玩具店买玩具。(2) Mr Brown wants to buy a Christmas tree for Mike.=Mr Brown
10、 wants to buy Mike a Christmas tree.布朗先生想买一棵圣诞树给迈克。【练习】按要求完成句子。We can buy our teachers some flowers on Teachers Day.(改为同义句)We can buy our teachers on Teachers Day.【答案】some flowers for5. The lesson goes on, but Bobby is still looking out of the window.课继续进行着，但是波比仍然朝窗外看。解析：look out of .意为“朝外看”。其他常见的与
11、look 搭配的短语:look for 意为“寻找”, look after意为“照顾”, look out意为“小心”, look around 意为“环顾四周”。【例句】That dog is looking out of the door. 那只狗正在朝门外看。【练习】单项选择。( ) Mr Green the window to enjoy the beautiful scenery.A. looked out of B. looked after C. looked for【答案】A6. Miss Fox gets angry. 狐狸老师变得生气。解析：句中的 get 是系动词，意为
12、“变得，成为”，常与形容词连用，表示一种渐渐变化的过程。【例句】We have to go now. Its getting late. 我们现在得走了。天色越来越晚了。【练习】根据中文提示完成句子。夏天天气变得炎热起来了。The weather in summer.【答案】gets hot7. Miss Fox waits for the answer. 狐狸老师在等待答案。解析：wait for 意为“等待”,后接名词或代词作宾语。【例句】Were waiting for the metro to the museum.我们正在等去博物馆的地铁。【练习】根据所给中文提示填空。Is the
13、teacher (等待) you in the office?【答案】waiting for三、 易错易混全解1. 易混淆动词 look, see, watch 与 read 的用法。【例题】单项选择。( ) My father newspapers for news ten years ago.A. watched B. saw C. looked D. read【答案】D点拨：look 强调“看”的动作，可以单独使用，用来引起对方的注意，如果后面接宾语，则要与at连用；see强调“看”的结果，表示看见、看到；watch 表示注视、观看，常用于表示看电视、看电影、观看足球之类的体育运动等；r
14、ead表示阅读，常用于表示看书、看报纸等。此题设空处后为newspapers,应该用read 来搭配,故选D。2. 易混淆 with 与 use 的用法。【例题】选词填空。(1) I cut the paper (with/use) the knife.(2) You can (with/use) my mobile phone to call your mother.【答案】(1) with (2) use点拨：with 和 use 都有“用”的意思，但是两者用法不同。with 是介词，表示一种方式，在句中作状语；use 是动词，在句中作谓语。第(1)小题，句中已经有谓语动词cut，设空处所填内容应与后面的 the knife一起作状语，故填 with。第(2)小题,句子缺少谓语动词,故填 use。
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