【教材解读】六上英语教材深度解读（含典例讲解+课后练习+答案）Unit 4 Then and now 第2课时 Grammar time 译林版

Unit 4 Then and now 第2课时 Grammar time 译林版 知识点一 情态动词can在一般过去时中的变化 【知识精讲】 情态动词can的过去式为could，没有人称和数的变化，后面加动词原形。 肯定句： 我会写了。I could write. →否定句 I couldn’t write. couldn’t= could not 【经典例题】 My little sister _____________three years ago. A. couldn’t wrote B. couldn’t write C. can’t write 【名师解析】 根据three years ago 可知，句子为一般过去时，所以用can的过去式could，could没有人称和数的变化，后面加动词原形，couldn’t= could no，所以选B。 知识点二 wrote 【知识精讲】 write的过去式为wrote。 肯定句：He wrote letters yesterday. 否定句：He didn’t write letters yesterday. 【经典例题】 They ______ (write) something on the card this morning. 【名师解析】 根据this morning可知，句子为一般过去时，所以write用过去式，write的过去式为wrote，所以填wrote。 知识点三 bought 【知识精讲】 buy的过去式为bought buy sth. for sb. =buy sb. sth. 给某人买东西 buy的对应词为sell。 【经典例题】 I________ (buy) some flowers for my grandma yesterday afternoon. 【名师解析】 根据yesterday afternoon可知，句子用一般过去时，buy的过去式为bought。 课时小练 一、单项选择 1. My mother _______things on the Internet yesterday morning. A. is buying B. buys C. bought 2. I_________ to the supermarket on foot last weekend. A. was go B. go C. went 3.My mother often _________ with her friends when she was a child. A. chats                                B. chatting                                C. chatted                                D. chat 4. His sister _____________five years ago. A. couldn’t wrote B. couldn’t write C. can’t write 5. I ________ email to my e-friend last night. A. write a B. wrote a C. wrote an 6.I _________ kites in the sitting room _________ my brother last Saturday. A. am making; and                    B. made; with                    C. make; with                    D. made; to 二、写出下列动词的过去式。 ⑴do________ ⑵can________ ⑶fly________ ⑷take________ ⑸get________ ⑹see________ 三、单词拼写 按要求写出单词或短语 （1）take (过去式)________ （2）read(过去式)________ （3）ate(原形)________ （4）go(过去式)________ （5）saw(原形)________ （6）do(过去式)________ （7）make friends (汉语)________ （8）看报纸(英语).________