牛奶闻起来好像酸了。
It seems as if you are the first one here.
好像你是第一个来的。
特别提示
as if从句的时态不受主句支配,当主、从句同时,从句用一般过去时;当主、从句同时,并正在进行,用过去进行时;从句动作发生于主句之前,用过去完成时。
John is so strongly built that he looks as if he could lift an elephant.
约翰强壮得好像能举起一头大象。
He heard a noise, as if someone were breathing.
他听见一种好像人在呼吸的声音。
【例题】 He has never traveled in any big cities, but he talks about London as if he there.
A. has been
B. has gone
C. had been
D. had gone
解析:句意为“他从未去过大城市,但他谈论伦敦时就好像他去过那里了”。他没有去过伦敦所以用虚拟语气;去伦敦的动作发生在说话之前,所以用过去完成时。
答案:D
(2)as if 常常和look,seem,appear,taste,smell等词连用。
It looks/seems/appears as if表示看起来好像,但是我们可以用it seems/appears that,却不能用it looks that。
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