Unit 8 It must belong to Carla. Lesson 3 Grammar Focus 导学案 人教版英语九年级全册（无答案）

Lesson 3　Grammar Focus
语法练习
Whose volleyball is this？ It must be Carla's. She loves volleyball.
Whose hair band is this？ It could be Mei's hair band. Or it might belong to Linda. They both have long hair.
What did you see that night？ I'm not sure, but it can't be a dog. It was bigger. I think it might be a bear or a wolf.
语法详解
情态动词表推测的用法
1. 表推测的情态动词
用于表示推测或表达可能性的情态动词有can, could, may, might和must。其语气强弱顺序为：must > can > could > may > might。
表肯定的推测 must“肯定；一定”，一般只用于肯定句中
表可能的推测 can/could/may/might“可能；或许”，其中can通常只用于否定句或疑问句，而could, may, might均可用于肯定句、否定句和疑问句中
表否定的推测 can't/couldn't“不可能”
注意：mustn't意为“不准；禁止”，不表示否定的推测。如：
You mustn't go out alone at night. 晚上你不能单独出去。
2. 情态动词对不同时态的推测
用法 结构 例句
对现在或将来的情况进行推测 情态动词＋动词原形 Jim might do his homework after school. 吉姆可能会在放学后做作业。
对正在进行的情况进行推测 情态动词＋be＋动词－ing形式 Jim might be doing his homework in the classroom. 吉姆可能正在教室里做作业。
对过去或已发生的情况进行推测 情态动词＋have＋动词过去分词 Jim might have finished his homework. 吉姆可能已经做完作业了。
一、单项填空
( )1. Listen! I think it be Mrs. Li singing in the next room.
—It be her. I know she has already left for New York.
A. may; must　　　　B. must; can't　　　　C. must; mustn't　　　　
( )2. Look! Mr. Li is playing basketball with his students.
—It be him. He has gone to Xi'an.
A. mustn't B. can't
C. shouldn't
( )3.Hey, whose basketball do you think this is
—It belong to Linda. She likes playing basketball best in our class.
A. must B. can
C. mustn't D. can't
( )4. There be a heavy snow last night. It's all white outside.
A. would B. need
C. must D. can
( )5. —Listen, there is someone knocking at the door. Who could it be
—I'm not sure. It be a postman.
A. might B. can't
C. must D. shouldn't
二、完成句子
1. 现在还不是回电话的最佳时间，这个点他一定还在睡觉。
It's not the best time to call him back. He must be sleeping now.
2. 这只铅笔可能是汤姆的。This pen could/may/might be Tom's.
3. 他一定已经读了报纸上的新闻。
He must have read the news in the newspaper.
4. 学生们不准在走廊上乱跑。
The students mustn't run about in the hallway.
5. 她不可能这么早去学校。She can't go to school so early.
三、小语篇选择
　　One evening, an old lady went shopping and bought some toys for her grandson, including a knife. When she came back to her car, she found two men in the car. She realized that they 1 drive her car away.
　　Then she took out the toy knife and pointed at the men in the car. “Get out of the car！” She shouted 2 . The men got so scared that they ran away quickly. After that, the lady took out the key to start her car. To her surprise, she 3 start it. There 4 something wrong — It wasn't her car! She looked around and saw the men come up to her with a policeman. She thought it was time for her 5 the truth and make it clear. After hearing her story, the policeman began to laugh. And her face turned red.
( )1. A. can　　　　　　　　　B. might　　　　　 C. should
( )2. A. anger B. angry C. angrily
( )3. A. shouldn't B. mustn't C. couldn't
( )4. A. can't be B. must be C. can
( )5. A. tell B. to tell C. telling