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You haven?t been abroad before, have you? 你以前沒(méi)出過(guò)國(guó),是不是? 。 3.助動(dòng)詞 do 有人稱和時(shí)態(tài)的變化,主要用來(lái)構(gòu)成謂語(yǔ)是實(shí)意動(dòng)詞的句子的否定句、疑問(wèn)句或?qū)χ^語(yǔ)動(dòng)詞進(jìn)行強(qiáng)調(diào)。t 考點(diǎn)四 系動(dòng)詞 /助動(dòng)詞 (六年未考,只做了解 ) 1.系動(dòng)詞本身沒(méi)有詞義,不能單獨(dú)作謂語(yǔ),只能和表語(yǔ)一起構(gòu)成謂語(yǔ),說(shuō)明主語(yǔ)的身份、性質(zhì)、特征等。s food supply will surely rise. A. can B. can39。t 6. (2022t C. shouldn39。福建中考改編 )—Must I hand in the survey on the use of bicyclesharing right now? —No, you . A. needn39。江蘇泰州中考 )To keep children away from danger during the ing summer holiday, parents give them some safety tips. A. should B. may C. could D. might 4. (2022t D. needn39。t B. can39。t 2. (2022內(nèi)蒙古通遼中考 )Where are you going for your summer holidays? I go to Dalian. I haven39。t have to.”。 “ Must...?”句式的肯定回答是“ Yes, ... must.”,否定回答是“ No, ...needn39。 4.“ May...?”句式的肯定回答是“ Yes, ... can.”,否定回答是“ No, ...can39。 3. have to有人稱、數(shù)和時(shí)態(tài)的變化,表示受客觀條件限制,意為“不得不”。 2. mustn39。t) Lisa must be at home. (推測(cè)現(xiàn)在狀況 ) You must be kidding. (推測(cè)現(xiàn)在正在發(fā)生 ) They must have seen the movie.(推測(cè)過(guò)去狀況 ) 原形與過(guò)去式 用法 例句 shall/ should “ Shall...?”用于第一人稱表示提建議或請(qǐng)求 Shall we ask the teacher for help? should用于各種人稱、強(qiáng)調(diào)義務(wù)或責(zé)任 He shouldn39。re not supposed to ______ those who failed. —No one can be a winner all the time. A. turn out B. laugh at C. spread out D. share with 考點(diǎn)三 情態(tài)動(dòng)詞 原形與過(guò)去式 用法 例句 can/ could 表示能力 (= be able to) Tom can swim. = Tom is able to swim. (疑問(wèn)句中 )表示請(qǐng)求 Can I help you? Could you give us a hand? (否定、疑問(wèn)句中 ) 表示可能性 Can the news be true? The boy can39。s work till tomorrow. A. put off B. turn down C. give away D. look up 8. (2022m afraid not. You can39。安徽中考 )Some animals can the color around to protect themselves. A. take on B. give up C. put away D. see off 7. (2022ll my cigarette(香煙 ) at once. A. put out B. put away C. put up D. put off 5. (20