Question

as if 通常什么意思。it looks as if is going to rain.看上去天要下雨了。在这句里面as if 什么意思？

as if在表语从句中只跟在look 后面吗？

Answer 1

（1） as if 的语义有几种：
1. 好像，似乎，仿佛
2. [引导名词从句] ＝ that
3. [引导无定形句，表示惊讶、不信任、愤懑等强烈感情]好像…似的，倒是…似的

（2）在此句中，as if 是第1种意思。
（3）表语从句中，可以跟在：
1. look: 如句 It looks as if it is going to rain.
2. appear: It appears as if it is going to rain.
3. seem: It seemed almost as if the poor man wanted to give us all he knew before going away.这可怜的人好像恨不得把自己知道的东西在他离开之前全教给我们。
4. feel: Some say they feel as if they are "under house arrest". 其中一些人说，这种感觉就像是自己被软禁一样。
5. be动词：It is as if our information society is one huge aggregate copying machine.这好像是我们的信息社会变成了一个复制机的巨大集合体

Answer 2

as if “好像”的意思，这句话里面也是这个意思

Answer 3

犹如，好似

Answer 4

好像