A: Doesn't she have any friends?

难道她没有朋友吗？

B: If she has, they must be fair-weather friends.

如果有，也一定是不能与她共患难的朋友。

A: Such friends are even worse than enemies.

这样的朋友甚至比敌人还要糟糕。

B: She'd better keep away from them.

她最好离他们远点。

01 Doesn't/Don't/Can't...?

难道...不...

Don't you know who you are talking to?

你难道不知道你在和谁说话吗？

Can't you come a little earlier?

你就不能早点来吗？

Don't you have a pet?

你没有宠物吗？

回复：

Yes, I do. 不，我有宠物。

No, I don't. 是的，我没有宠物。

Can't you swim?

你不会游泳吗？

回复：

Yes, I can. 不，我会。

No, I can't.是的，我不会。

Didn't you go and see him yesterday?

你昨天没有去看他吗？

回复：

Yes, I did. 不，我去了。

No, I didn't. 是的，我没去。

02 fair-weather friends

不能共患难的朋友；酒肉朋友

I thought he was my best friend, but he turned out to be just a fair-weather friend.

我以为他是我最好的朋友，但事实证明他是个靠不住的朋友。

A fair-weather friend will only stick around when things are going well for you.

酒肉朋友只有在你一切顺利的时候待在你身边。

03 keep away from

远离...；避免；保持距离

I always try to keep away from negative people.

我总是试图远离消极的人。

Kids must keep away from junk food.

孩子们必须远离垃圾食品。

You'd better keep away from my daughter.

你最好离我女儿远点。