She has already cleand the kitchen.(改为否定句) She hasn't cleaned the kitchen yet.

问题描述:

She has already cleand the kitchen.(改为否定句) She hasn't cleaned the kitchen yet.
我知道答案,但是我想知道是为什么

因为have是情态动词 所以改否定的时候是直接在后面加not的 而不需要助动词do 然后呢 already和yet都是表示已经的意思 但是already是用在肯定句的 yet是用在否定句和一般疑问句的