问题描述:
改错He hasn't often have lunch at home.我认为是将 hasn't 改为does't .可答案却是将often改为yet .如果用完成时,那么后面那个have应该是had 才对呀.因为要用过去分词嘛.请赐教.
问题解答:
我来补答展开全文阅读