31. be careful 当心；小心
be careful with 强调的是对干什么要认真,谨慎
be careful in 用法和 be careful with用法近似
be careful of强调对...认真，细心，小心(比较褒义)
be careful about强调的是要当心、小心，对……提高警惕
eg. He was being very careful with the coffee so as not to spill it. You can’t be too careful. 再小心也不为过。
32. be different from… 和什么不一样
( Opinions on this topic differs from person to person.)
33. be famous for 以……(特点/作品等)著名
be famous as + 职业/身份 “作为……而出名”/“是一个著名的……”
34. be friendly to sb. 对某人友好
(以-ly结尾的adj: lovely, lonely, friendly, lively等)
35. be from = come from 来自
