情态动词在学习英语中的作用及用法详解

A 篇章学习:朗读对话，回答问题

Andy: Mom, could I go to Tom's party tonight? It's his birthday.

Mom: Sure, you can, honey. But it's a school day tomorrow.You should go to bed early, and you know, students should be at school on time.

Andy: But Mom, I told Tom I would go there.

Mom: Alright, could you come back before 9 pm?

Andy: Of course I can, Mom. Should I take a gift to him?

Mom: Yes, you should.

B 语法聚焦1: 情态动词could的用法。

小贴士

注意：使用could提问的时候，回答使用can / can't回答，而不用could。

Could I eat some bread？ Yes, you can, Andy.

练习1　根据场景，使用could和所给词完成句子。

1 I, play with the doll, please

__________________________________________________

2 you, open the door, please

__________________________________________________

练习2　使用can或can't填空，完成回答。

1 — Could I borrow your black dress?

— Yes, _______________. Here you are.

2 — Could I watch cartoon shows, Mom?

— No, _______________. It's time for bed.

3 — Could I have a look at your new phone?

— Yes, _______________. Here you are.

4 — Could you help me with my homework?

— No, _______________. You should do it by yourself.

5 — Could you call Mary for me?

— Yes, _______________. I'll do it at once.

练习3　仿照例句完成对话，注意情态动词could的用法。

例: A: Could I use your pencil for a while? (use)

B: Sure, you can. I have two pencils.

1 A: _______________ I _______________ a picture of you? (take)(www.xing528.com)

B: No, you _______________. I'm sorry.

2 A: _______________ I _______________ something to drink? (have)

B: Of course, you _______________. Here you are.

3 A: _______________ you _______________ here a second? (come)

B: Sure, I _______________. What's the matter?

4 A: _______________ you _______________ the door, please? (open)

B: Sorry, I _______________. It's so noisy outside.

C 语法聚焦2: 情态动词should的用法。

练习4　使用should和所给词填空。

read watch wash call exercise

1 You _______________ _______________ his new book. It's fun.

2 I made a mistake. _______________ I _______________ him and say sorry?3 Young children ____________ ____________ TV less than an hour every day.4 _______________ I _______________ hands before dinner?

5 Tom _______________ _______________ more for his health.

练习5　根据句意完成连线配对。

单元练习

练习6　单项选择。

1 ( ) — ______________ you pass me the sugar, please?

— Sure I ______________. Here you are.

A. Could; can B. Should; should C. Could; can't

2 ( ) You ______________ visit the Science Museum when you have time. It's fun.

A. couldn't B. should C. shouldn't

3 ( ) It's too dangerous. You _______________ drive so fast.

A. should B. can C. shouldn't

4 ( ) He's not at home now. ______________ I call him?

A. Need B. Should C. Can't

5 ( ) — Could I have one more glass of wine?

— I'm afraid you ______________.

A. can't B. couldn't C. should

练习7　根据场景和所给单词，写出合适的句子，注意标点符号的使用。