新概念英语第一册课后练习题及答案：49-50

Written exercises书⾯练习
A Complete these sentences using an not, aren't, isn't, can't, don't or doesn't.完成以下句⼦，⽤am not, aren't, isn't, can't, don't或doesn't填空。

1 He likes coffee, but I______.
2 She likes tea, but he ______.
3 He is eating some bread, but she ______.
4 She can type very well, but he ______.
5 They are working hard, but we ______.
6 He is reading a magazine, but I______.
B Answer these questions using I, he or she.
模仿例句回答以下问题，选⽤I, he或she。

Examples：
Does Penny like tomatoes?
Yes, she does.
She likes tomatoes, but she doesn't want any.
Do you like potatoes?
Yes, I do.
I like potatoes, but I don't want any.
1 Does Sam like cabbage?
2 Does Sam like lettuce?
3 Do you like peas?
4 Does Mrs. White like beaus?
5 Do you like bananas?
6 Does Mr. Jones like oranges?
7 Does George like apples?
8 Does Elizabeth like pears?
9 Do you like grapes?
10 Does Carol like peaches?
答案：
Lesson 50
A
1 He likes coffee, but I don't.
2 She likes tea, but he doesn't.
3 He is eating some bread, but she isn't.
4 She can type very well, but he can't.
5 They are working hard, but we aren't.
6 He is reading a magazine, but I am not.
B
1 Does Sam like cabbage?
Yes, he does. He likes cabbage, but he doesn't want any.
2 Does Sam like lettuce?
Yes, he does. He likes lettuce, but he doesn't want any.
3 Do you like peas?
Yes, I do. I like peas, but I don't want any.
4 Does Mrs. White like beans?
Yes, she does. She likes beans, but she doesn't want any.
5 Do you like bananas?
Yes, I do. I like bananas, but I don't want any.
6 Does Mr. Jones like oranges?
Yes, he does. He likes oranges, but he doesn't want any.
7 Does George like apples?
Yes, he does. He likes apples, but he doesn't want any.
8 Does Elizabeth like pears?
Yes, she does. She likes pears, but she doesn't want any.
9 Do you like grapes?
Yes, I do. I like grapes, but I don't want any.
10 Does Carol like peaches?
Yes, she does. She likes peaches, but she doesn't want any.。