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……