为帮助大学生学到权威的英语知识，本网站特提供以下资料：
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。