as if,seem as区别

as if:
好像
例句与用法:
1.He was shaking with fright as if he had seen a ghost.
他吓得直哆嗦,就好像看见了鬼一样.
2.He behaves as if he had no common sense.
他的言行就好像没有常识似的.
3.He quickly ran home,looking as if there was something wrong with him.
他快步跑回家,看上去好像有什么事不对劲.
4.It looks as if she's gone away for a few days.
好像她已出去好几天了.
5.It seems as if he knows everything.
他似乎是个万事通.
6.It looks as if it isn't clean enough to bathe here.
看起来海水好像不干净,不能游泳.
7.It looks as if it is going to rain.
看来要下雨了.
8.I felt as if my heart would burst with joy.
我觉得自己高兴得心花怒放.