CET4

I.A back up 支持,援助;

A.倒退,后退 The policeman wouldn't have believed me if you hadn't backed me up.

I based on 以...为基础 His argument is based on facts.

I on the basis of 以...为基础 Society rested on the basis of the family.

E to begin with 首先,第一点 =in the first place:We can't go.To begin with, it's too cold.Besides, we've no money

I on behalf of 代表,为了 The president is ill, so I'm speaking on his behalf.

I make believe 假装 The children are making believe that they're princes and princesses.

I ask after 询问,问候 He ask after you / your health.

E ask for 请求,要求

I attached to 系,贴,连接;附属;依恋 1.I was attached to the naval college as a special instructor for six months. 2. I am very attached to that car.

E pay attention to 注意 You must pay attention to the teacher.

A on (the/an) average 平均,一般说来 On average we receive five letters each day.

E right away 立刻,马上 Do it right away!

I back and forth 来回地,反复地 The chair rocked back and forth.

A back down/off 放弃,让步,退却 I saw that she was right, so I had to back down.

A back of 在...后部,在...背后

I at best / at the best 最好,充其量 At best the company will lose money this year-at worst it may have to close down.

I get the best of 战胜;从中得到最大益处 They got the best of the other team at last.

E make the best of 充分利用,妥善处理 to make the best of a bad job; He will make the best of the situation.

E do/ try

one's best 尽力,努力 We must try our best to overcome the difficulty.

编辑推荐：

2014年英语四级词汇辅导

2014年大学英语四级词汇精选模拟题

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