英语专业四级语法词汇详解四十套:第12套

Test Twelve

虚拟条件句中的一些非常规现象

a)省略连词if,把were, had, should移到主语前。例如：

Were they here now, they would give us some advice.

Had it not been for your help, we wouldn’t have succeeded.

b)用介词或介词短语without, but for, in the absence of, under...

Without the leadership of the Party, we could not live a happy life.

But for the atmosphere we would die.

c)if only结构，表示“但愿…”，“要是…”，例如：

If only I had more time, I could go to watch the performance.

If only I knew where he lives.

近义词辨析

gather, assemble, collect

这组词均含有“召集或聚集成小组、一群或团体”的意思。

gather

指把很分散的或分布很广的东西聚集到一起，或指自发地形成一组。

The pupils are gathered into the auditorium.学生们被召集在大礼堂。

assemble

指人或组织为了某种共同的或特殊的目的集合或聚集在一起。

The football fans assembled on the square to celebrate the victory of their team.球迷们聚集在广场上庆祝他们球队的胜利。

collect

指有选择地进行收集或采集。

They collected some precious butterfly specimens on the mountains.他们在山上收集了一些珍贵的蝴蝶标本。