29. after all 毕竟,到底; (not) at all 一点也不;

all at once(=suddenly)突然; above all 最重要的; first of all 首先; all in all 大体上说

All in all, he’s more learned than he was ten years ago. 总的说来，他比10年前更有学问了。

All at once she lost her temper. 她突然发起脾气来。

You should forgive him for his forgetfulness; after all, he is over seventy. 你应该原谅他的健忘症，毕竟他已经七十多岁了。

First of all, let me tell you the news. 首先，让我告诉你这个消息。

28. in all (=counting everyone or everything, altogether) 总共, 总计

That’s ￡5.40 in all. 总共5.40英镑。

27. above all (=especially, most important of all)　　 尤其是, 最重要的.

What a child should do, above all, is to do well in his studies. 小孩子该做的最重要的事是学好功课。

26. in the air 1)不肯定, 不具体.　 2)在谣传中.　 on/off the air正在广播；停止广播

We may be going skiing at Christmas, but it’s still all up in the air. 我们圣诞节可能去滑雪，但还没有定下来。

We shall be on the air in five minutes.我们五分钟后开始广播。

25. ahead of 在……之前, 超过……; ahead of time 提前.

He will be ahead of others in English. 他在英语方面将超过别人。

24. in agreement (with) 同意, 一致

We are in agreement with their decision. 我们同意他们的决定。

23. agree with 赞同(某人意见) agree to 同意

I entirely agree with you. 我完全同意你的看法。

We couldn’t agree on a date/when to meet.关於日期[什么时候见面], 我们未能取得一致意见.

22. take advantage of (=make the best of, utilize, make use of, profit from, harness)利用.

She took advantage of his good nature.她利用了他脾气好这个特点。

21. have an advantage over 胜过.　 have the advantage of 由于……处于有利条件　 have the advantage of sb.知道某人所不知道的事

This method has the advantage of saving a lot of fuel. 这个方法有可以节省很多燃料的优点。

Her teaching experience gave her a big advantage over the other applicants for the job.她的教学经验使她比起其他求职者具有很大的有利条件。

20. in　 advance (before in time) 预告, 事先.

Before visiting him, I called him up in advance. 在拜访他之前，我先打电话给他。