摘要: can do = be able to do will do = be going to do should do = ought to do 情态动词 都是表示建议 从这里发现 to do (不确定的意思)动词不定式 to 就是不确定去做,做不做由你 finish doing finish 都结束 阅读全文
posted @ 2020-03-19 09:58 彭成刚 阅读(837) 评论(0) 推荐(0) 编辑