词组辨析（五）

把……归因于……  认为……是……的结果

attribute to

to believe sth. to be the result of

平均

on the average

on average

on an average

意识到，知道

（be）aware of

be conscious of

having knowledge or consciousness

在……后面

at the back of

behind

in the back of 在……后部（里面）

on the back of 在……后部（外面）

卧病不起

be on one's back

be ill in bed

支持，维护

at one's back

supporting or favoring sb.

have sb. at one's back 有……支持，有……做后台

不理睬（某人），背弃，抛弃

turn one's back on sb. 

turn away from sb. in an impolite way

背着某人（说坏话）behind one's back

基于

be based on

be based upon

根据……在……基础上 on the basis of

运动项目上打赢 beat……at

喘不过气来 out of breath

成批的，不散装的 in bulk

起立发言 take the floor

出差办事 on business

be busy with sth. 忙于某事

be bust doing sth. 忙于做某事

last but one 倒数第二

要不是，表示假设

but for

without

用多少钱买 buy sth. for ……money

万一

in case

for fear that