21 be afraid to do（ of sth）恐惧，害怕……

eg: I'm afraed to go out at night I'm afraid of dog

22 be allowed to do被允许做什么

eg: I'm allowed to watch TV我被允许看电视

I should be allowed to watch TV我应该被允许看电视

23 be angry with sb生某人的气

eg: Don't be angry with me

24 be angry with (at) sb for doing sth为什么而生某人的气

25 be as…原级… as和什么一样

eg: She is as tall as me她和我一样高

26 be ashamed to

27 be away from远离

28 be away from从……离开

29 be bad for对什么有害

eg: Reading books in the sun is bad for your eyes在太阳下看书对你的眼睛不好

30 be born出生于

31 be busy doing sth忙于做什么事

be busy with sth忙于……

32 be careful当心；小心

33 be different from……和什么不一样

34 be famous for以……著名

35 be friendly to sb对某人友好

36 be from= come from来自

eg： He is from Bejing He comes from Bejing Is he from Bejing?

Does he come from Bejing?

37 be full of装满……的

be filled with充满

eg: the glass is full of water the glass is filled

with water

38 be glad+ to+ do/从句

39 be going to+ v(原）将来时

40 be good at(+ doing)= do well in在某方面善长,善于……