我是来自新东方优能学习中心的老师陶然.
1、as if=even though,引导虚拟语气从句,与if形式相同,可以翻成“就好像”.
He looks as if he were an artist.
2、if only 后面跟虚拟语气的句子.If only I were a flying kite.=How I wish I were a flying flying bird!翻译成“如果是……多好”
3、If you ever visit London,you must come and stay with us.你要是到伦敦来,一定要到我们这里住住.还是if条件句,强调时间上“曾经,不论何时”
祝你取得好成绩.