2024年中考英语核心语法点复习 情态动词 10

初中英语语法知识 复习集 情态动词 动词分类 实义动词：比如want、like、go等 系动词：feel、taste、sound、look、smell（5个感官动词）等； 助动词：do、does、did；will、shall；have、has等 情态动词：can ，should，must，may等 定义 表能力 I can play basketball 表请求 Can I leave now? 表必要 I must study hard. 表建议 You should finish your homework. 情态动词的几大特点 1 情态动词+动词原形 2 情态动词否定后面直接+not 3 情态动词变疑问句，直接提前 4 情态动词无三单、无将来 注意：have to例外，用于第三人称单数时变成has to 情态动词基本用法✮✮✮ 序号 原形 过去式 普通含义 推测含义 1 may might 可能，也许 可能，也许 2 can could 能力；请求 / 3 can't couldn't 不能，不可以 不可能（100%确定） 4 will would 将要；一种意愿 / 5 must / 必须 一定（100%确定） 6 mustn't / 禁止 / 7 need / 需要 / 8 needn't / 不需要，不必 / 9 should / 应该 / 10 shouldn't / 不应该 / 情态动词表推测✮✮✮ can't 100%否定推测 不可能 She can't be Lucy. may 不确定推测 可能 She may be Lucy. must 100%确定推测 一定 She must be Lucy. 情态动词辨析 1.表能力 can 能力 I can play basketball.=I am able to play basketball. could can的过去式 I could play basketball when I was young. =I was able to play basketball when I was young. be able to 相当于can/could / 2.表请求 委婉程度：can——could——may 情态动词 肯定回答 否定回答 can Yes,you can. Of course. No,you can't No,you mustn't(禁止) could may ——Can/Could/May I leave now? ——肯定回答Yes,you can/Of course. ——否定回答No,you can't/No,you mustn't 3.表必要 have to “不得不/必须” 客观条件限制(被迫) don't have to “不必”=needn't must “必须” 主观条件限制(主动) musn't “禁止” 注意：must引导的疑问句 情态动词 肯定回答 否定回答 must Yes,you must. No,you needn't / No,you don't have to ——Must I finish my homework now? ——是的，你必须现在完成。 ——Yes,you must. ——不，你不必现在完成。 ——No,you needn't / No,you don't have to 4.表建议 should should“应该”shouldn't“不应该” 常用于纠正别人,提出或征询建议 had better had better do sth“最好（做某事）” had better not do sth“最好不（做某事）” 易混淆辨析 maybe 副词，句首或者句末 Maybe she is a teacher. may be 情态动词+be,句中 She may be a teacher. may 情态动词，句中 She may go to shop to buy something. 情态动词中的need 1). need 作情态动词用时, need do sth需要做某事 I needn't go there too early. 2). need作实义动词用时，有人称、时态和数的变化。need to do sth需要做某事 I don't