whereat: adv.1.〔关系〕对于…，所…的；在这里。2.〔古语〕〔疑问〕为什么。短语和例子W- are you angry 你为什么生气？ I know the things whereat you are displeased. 我知道你所不高兴的是什么。
which: pron.1.〔疑问〕哪个，哪一个(人)；哪一些。 W- is the largest 哪一个最大？ I don't know which is which. 我不知道哪一个是哪一个。 W- to reject and which to accept 何去何从？ 2. 〔关系〕这(个)，那(个)〔有先行词〕。 the house in which I once lived
