what其他用法：
1、what +主語+不及物動詞/系動詞+介詞
例句：The judge does not consider what each eyewitness looks like.
解析：what each eyewitness looks like是賓語從句，what在從句中作介詞like的賓語。
2、What+主語+及物動詞
例句：What he says is reasonable.
解析：What he says是主語從句，what 在主語從句中作賓語。
例句：It is none of your business what other people think about you. Believe yourself.
解析：本句意為“別人怎么看你，與你無關，相信你自己。”其中It是形式主語，真正的主語是what other people think about you.