drink in . take in；absorb吸收

There is plenty of nitrogen in the air but it cannot be drunk in directly by the plants．空气中有大量的氮，但是植物不能直接吸收。

The thirsty plants drank in the welcome rain．干旱的庄稼吮吸着喜人的雨水。

Although they are old，they drink in knowledge as young students．虽然他们已经上了年纪，但是他们象年轻学生一样如饥似渴地吸取知识。

drink in . listen with attention to全神贯注地倾听

The boy drank in every word of the sailor's story of his adventures．这男孩全神贯注地倾听那水手讲的冒险故事的每一句话。

Whenever there's any gossip in the neighbourhood，Mrs Green drinks it all in and spreads it as fast as she can．无论什么时候，只要街坊四邻有什么闲话，格林太太总是全神贯注地听着，然后又尽可能快地张扬出去。

drink in . take pleasure in giving one's attention to（e．g．a sight）陶醉于；欣赏（景色等）

We stood on top of the hill， drinking in the beautiful view．我们站在小山之巅，欣赏这美丽的景色。

Their thirsty ears drank in the delicious music．他们如痴似醉地倾听那优美动听的音乐。

drink to . honour somebody with a drink为…祝酒

Let's drink to the health of the host．让我们举杯祝主人健康。

I propose that we drink to our success．我提议为我们的成功而干杯。

drive at . try or want to say；hint at 用意所在

I don't know what you are driving at．我不知道你意图何在。

The students didn't make out what the teacher was driving at．学生们没有弄明白老师的意图。

drive away . leave in a vehicle乘车离去

The boy began to cry when his parents drove away．父母开车离去时，那个男孩子哭了。

drive away . make go away驱走；驱散

She can't drive away her feelings of sadness．她驱散不了心头的悲哀。

drive away at . work very hard at（one's work，）努力做（工作等）

We are driving away at this subject．我们正在埋头研究这个课题。

He is still driving away at the dictionary．他仍在孜孜不倦地编那本词典。

drive back . force somebody to go back击退；使…回

The soldiers drove back the enemy five times in a day．战士们一天打退了敌人的五次进攻。

drive crazy . cause somebody to become mad使…陷于精神错乱

This endless loud music is driving me crazy．这种无休止的噪声音乐快让我发疯了。

drive home to . force somebody  to believe or see使…相信或了解

You must drive home to Jack where the present difficulties lie．你必须使杰克清楚地认识到当前的困难。

He can't drive home to us his point．他不能向我们透彻地阐述自己的观点。

Advertisers keep repeating the name of the product in order to drive the message home．做广告的人不断地重复产品的名字以便让人们听清楚他们的广告内容。

drop（sb．） a line . write briefly to somebody 给（某人）写封短信

As soon as I get to the United States，I'll drop you a line．一到美国，我就给你写封短信来。

drop across . pay a causal visit；come across to visit串门；随便拜访

Mrs Barton lives on the other side of the road．She often drops across to have coffee with us．巴顿太太住在马路那边。她经常来串门和我们一起喝咖啡。

On my way back from school I'll drop across at my friend's home．放学回来的路上，我要顺便去我朋友家看看。

drop across . bring带来

I'll drop the book across to you this evening．今晚我把那本书给你带来。

drop away . get away；become less走掉；减少

It was a tedious lecture．The listeners dropped away one by one．演讲冗长乏味，听众一个个都走掉了。

The attendance has dropped away in recent months．最近几个月的出勤率下降了。

drop back . fall back in position落后；地位倒退

I've dropped back in work．我的工作落后了。

He has dropped back to fifth in his class．他在班上的名次已经退到第五名。

drop back . lessen减少；减轻

The unemployment figures dropped back last month．上月的失业人数下降了。

As the medicine took effect，the symptoms dropped back．随着药物的作用，症状减轻了。

drop back . move or step backwards； retreat退后；撤退

The enemy dropped back before our army's attack．我军还没有发动进攻，敌军就撤退了。

drop down . descend or fall quickly下降

The temperature has dropped down．气温已经下降了。

She dropped down into an armchair，exhausted．他精疲力尽，一下倒在扶手椅里。

drop down . lower oneself quickly俯身

The peasants dropped down on their knees in front of the temple．那些农民在寺庙前跪了下来。

drop in . visit unexpectedly；pay a visit to somebody without telling him beforehand 顺便拜访

Some friends dropped in to tea．几位朋友顺便来喝茶。

We were just sitting down to dinner when my friend dropped in．我们刚坐下吃晚饭，突然我朋友来了。