1、Unit 4 Then and now 第1课时 Story time 译林版知识点一 一般过去时情态动词can的句型转换【知识精讲】肯定句：她会写信了。She could write letters. 否定句She couldnt write letters.一般疑问句肯否回答Could she write letters? Yes, she could. / No, she couldnt特殊疑问句：她会/还不会做什么？What could she do? What couldnt she do?【经典例题】I _ (can) ride a bike last year. 【名师解析】根据
2、last year可知，句子为一般过去时，can 的过去式为could。知识点二 行为动词时态对比一般现在时和一般过去时【知识精讲】一般现在时He usually watches TV after supper.否定句：He doesnt watch TV after supper.一般疑问句： Does he watch TV after supper?特殊疑问句：What does he usually do after supper? When does he watch TV?一般过去式 He watched TV yesterday.否定句： He didnt watch TV ye
3、sterday.一般疑问句： Did he watch TV yesterday?特殊疑问句： What did he do yesterday? When did he watch TV?【经典例题】I _ basketball every day last year, but now I _ it three times a week.(play)【名师解析】根据last year可知，逗号前面为一般过去时，所以用played；根据逗号后面but now可知，谈论现在用一般现在时，所以填play。知识点三 write【知识精讲】write v. 写，过去式为wrotewrite a let
4、ter to sb. = write sb. a letter =write to sb.给某人写一封信来源:Z&xx&k.Com【经典例题】He wrote a letter _ his mother last week. A.forB.toC.from【名师解析】write a letter to sb. 给某人写一封信，所以选B。知识点四 动词不定式表目的【知识精讲】He used the telephone at home and in the office to call people.来源:学科网ZXXK来源:Zxxk.Com句意：他用家里和办公室的电话给人们打电话。to call
5、 people是打电话的目的。to do是动词不定式，用来说明动作的目的。I got up early to catch the first bus.【经典例题】The little boy made a card _ (make) his mother happy.【名师解析】句意：那个小男孩为了让他的妈妈开心做了一张卡片。to do是动词不定式，用来说明动作的目的。所以填to make。来源:学科网ZXXK知识点五 on the Internet【知识精讲】on the Internet通过网络on the radio通过广播on TV通过电视【经典例题】Now we can buy ma
6、ny things _ the Internet.A. in B. on C. for【名师解析】句意：现在我们可以通过网络买很多东西。on the Internet通过网络，所以选B。 知识点六 make friends【知识精讲】make friends交朋友；make friends with sb. 和某人交朋友【经典例题】Tom wants to make _ (friend) with Jim. 【名师解析】make friends with sb. 和某人交朋友,所以填friends。知识点七 do shopping购物 【知识精讲】do shopping = do the sh
7、opping = do some shopping = go shopping购物【经典例题】We _ (do) shopping yesterday for the coming party.【名师解析】do shopping购物; 根据yesterday可知，句子为一般过去时，所以填did。课时小练一、单项选择1. I _ go skating last year. A. can B. could C. was2. I _ football every day last year, but now I _ it three times a week.A. play;play B. play
8、; played C. played;play3. He wrote a letter _ his grandmother this morning. A.forB.toC.from4. The little boy drew a picture _ his father happy.A. to make B. make C. made5. Now we can buy food and clothes _ the Internet.A. in B. on C. for6. Tom wants to make _ with Jim. A. friend B. friends C. a frie
9、nd二、用所给词的适当形式填空1. We _ (do) shopping last weekend and bought lots of food.2.Five years ago, he _(can) ride a bike. 3.Twenty years ago, Mrs. Brown _(make) friends at school. 4. I _ swimming every day last year, but now I _ swimming three times a week.(go)5. The little boy made a model plane _ (win) t
10、he prize.6. Donna wants to make _ (friend) with Lily. 三、翻译1.20年前，布朗先生写信给朋友。_ 2.现在他有一个手机了。_ 3.六年前，Mike会阅读。_ 4.10年前，我没有电脑。_ 5.现在我有了电脑。_【参考答案】一、BCB ABB二、did; could make; went; go; to win; friends三、1.Twenty years ago, Mr Brown wrote letters to friends. 2.Now he has a mobile phone. 3.Six years ago, Mike could read. 4.Ten years ago, I didnt have a computer. 5. Now I have a computer.
