英语高三语法知识点归纳分享.doc

英语高三语法知识点归纳分享 高三英语语法知识点1 情态动词 一. 表示许可:有may, might, can, could。其中might. could则语气较委婉,但回答由他们引起的问句时,则不用might, could而用can。 1) May \ Might \ Can \ Could I keep the book for a few days? Yes, you can. 否定形式可用may not, can not或must not,不用might not。 2)Visitors may not (或can not/mustnt) touch the button.