初级英语语法第15讲--情态动词与不规则动词王衡英语小升初英语四轮复习法.ppt

1 情态动词是用于表示说话人的情绪,态度 或语气。不能单独用, 只能和其他动词 原形一起使用。 2 He can do that They can do that Can he do that? Can they do that? He can not do that They can not do that 3 情 态 动 词 can 讲 解 1. can，“能、会”，表示“能力” 例： 我会/能讲英语。 I can speak English. 我会唱歌。 她会唱歌。 I can sing. She can sing. 2. can，“可以”，表示“许可” 例： 你现在可以回家了。 You can go home now. 你可以用这本书。 You can use this book. 4 情 态 动 词 can 讲 解 3.情态动词没有 “单三”变化，并且后面的 动词永远用原形。 例： I can climb the tree. He can climb the tree. They can climb the tree. 5 情 态 动 词 can 讲 解 4. can 的句型结构 陈述句结构：主语+can+动词原形+其他 否定句结构：主语+cant+动词原形+其他 疑问句结构：Can+主语+动词原形+其他+? 疑问句回答：Yes,主语+can. No, 主语+cant 注意：can not = cant 例： He can swim in the Yellow River. He cant swim in the Yellow River. Can he swim in the Yellow River? Yes, he can. No, he cant. 6 情 态 动 词 can 讲 解 练习： He _(can play) basketball.(填空) Mr. Wang can teach English.(变否定句) Xiao ming can make a cake.(变疑问句) Can she fly in the sky.(给出肯定和否定回答) 7 情 态 动 词 may 讲 解 1.表示许可或征求对方的许可，有“可以”的意思 。 例如： You may go now. 你可以走了。 May I use your computer? 我用一下你的 电脑可以吗？ 8 情 态 动 词 may 讲 解 2.may 的句型 陈述句：主语+may+动词原形+其他 否定句：主语+may+not+动词原形+其他 疑问句：May+主语+动词原形+其他+？ 回答：Yes, 主语+may. No, 主语+cant. 注意：用may提问时，肯定回答可以用may 和can，否定回答用cant 9 情 态 动 词 must 讲 解 1.must “必须”，语气非常强烈，含有命令语气 例： 你必须早起。 You must get up early. 你必须8点到学校。 You must go to school at 8. 2.must not=mustnt “禁止”、“不允许”， Children mustnt play on the road. Its very dangerous. 孩子们不允许在路上玩耍，这样非常危险。 10 情 态 动 词 must 讲 解 3.must 的句型结构： 陈述句：主语+must + 动词原形+其他 否定句：主语+mustnt+动词原形+其他 疑问句：Must + 主语+动词原形+其他+？ 回答： Yes, 主语+must. No, 主语+neednt. 例子： He must be a teacher. 他一定是个老师。 Must I go home now？ 我现在必须回家吗？ Yes，you must. 是的，你必须回家。 No，you neednt. 不，你不必。 11 情态动词练习 1. Look, it _ be Mr Zhang. No, it _ be him. He has gone abroad. A. may; mustnt B. must; may not C. must; cantD. can; may not 2. Danny _ go with us tonight，but he isnt very sure yet. A. mustB. may C. can D. will 3. _ I take the newspaper away? No, you mustnt. You _ read it only here. A. Must; can B. May; can C. Need; must D. Must; must 4. The children _ play football on the road. A. neednt B. can C. mustnt D. must 12 情态动词练习 5. Must I do my homework at once? No, you _. A. needntB. mustnt C. cant D. may not 6. Theres no light on. They _ be at home. A. cantB. mustnt C. needntD. shouldnt 13 5、小学动词动词 不规则变规则变 化 无法无天只变单变单 元音 am/is-was are-were do-did have-had learn-learnt see-saw go-went spend-spent eat-ate meet-met say-said fly-flew bend-bent bite-bit hear heard leave-left make-made pay-paid send-sent run-ran sit-sat sing-sang drink-drank come-came swim-swam throw-threw become-became give-gave begin-began drive-drove draw-drew know-knew run-ran fall-fell forget forgot get-got ride-rode rise-rose sing-sang aught 和 ought变变成“o”了 teach-taught catch- caught think- thought buy-bought stand-stood take-took get-got write- wrote ride-rode tell-told speak-spoke wake-woke 去 “e” 加 “t”永远远不变变 sleep-slept feel-felt sweep-swept keep-kept let put read cut hit hurt spread 14 小学不规则动词总结 1、直接+d： agree, bake, believe, close，dance , exercise, like, live, type, welcome 2、改 y 为 I 加 ed： carry, cry, marry, study, try, worry 3、双写辅音字母： chat ，stop 4、有两种变化形式的： learn learned / learnt travel-traveled / travelled 5、不变的： hit-hit put-put cut-cut hurt-hurt read-read let-let spread-spread 15 小学不规则动词总结 6、特殊变化 16 不规则动词总结 不规则变化： become-became begin-began forget -forgot, ride- rode bend-bent, bite-bit , buy ，catch ，come, sit-sat choose-chose ， do-did draw-drew drink-drank drive-drove eat-ate fall-fell fly-flew pay-paid run-ran get-got give-gave go-went have/has-had hear heard rise-rose know-knew leave-left