It looked as if he had understood this question.的语法为什么是It looked as if ,而不是It is looked as if

It looked as if he had understood this question.的语法为什么是It looked as if ,而不是It is looked as if he looked as if sick这句话对吗?还是he looked as if is sick? He looked back at the whisperers as if he wanted to say something to them,but thought better of it it looked as if it was on fire.的意思? he looked as if sick里look是不及物动词? it looked as if it were going to rain 这里的looked表被动吗 为什么it seems as if=it looked as if而不是looks为什么是looked不是looks wondering if the looked as surprised as he felt?是不是倒装句啊? He looked as if he had lost a pound and found twenty penceTranslate the sentence He looked as if he were a spirit in that funny as和as if作为好像的意思时有什么区别?比如说这两个句子：He looked just as he had looked ten years before.She looked as if she were ten years younger. He looked at me as if I were mad. 后半句是不是应该用 as if I had been mad啊? my boyfriend looked as if he had been ill for a long time翻译 It looked as if it was going to rain.请问为什么不能在as前加上一个that? He looked as if he were drunk.句中可以省略 he were 其它什么情况下也可以省略? 表语从句练习he looked ___he had known nothing about itA.as if B.as C.that D.what The women looked after the boby as if he were her child he后面为什么是用were? He shook his head fiercely and stepped back as if hurt 上下文是这样的 A silence fell as we looked at each other,then I realized what he wanted.I held out a 500 naira note.Take this.He shook his head fiercely and stepped back as if hurt.It's