Unit 4 语法精讲（疑问词+不定式 must与have to）-2023-2024学年八年级下册英语单元核心知识讲练（牛津译林版）

这是一份Unit 4 语法精讲（疑问词+不定式 must与have to）-2023-2024学年八年级下册英语单元核心知识讲练（牛津译林版），文件包含Unit4语法精讲疑问词+不定式must与haveto-2023-2024学年八年级下册英语单元核心知识讲练牛津译林版pptx、Unit4课后作业疑问词+不定式must与haveto-2023-2024学年八年级下册英语单元核心知识讲练牛津译林版docx等2份试卷配套教学资源，其中试卷共1页， 欢迎下载使用。
eg: what t buy 买什么hw t get there 怎么到达那里when t leave 什么时候离开
eg: We haven’t decide where t g fr the hliday? Can yu tell me hw t deal with it? I wnder hw many bks t buy?
三个例句有何不同：①We haven’t decide where t g fr the hliday?动词+疑问词+不定式②Can yu tell me hw t deal with it? 动词+宾语+疑问词+不定式tell、ask、teach等可接双宾语的动词，可用这一结构eg: I asked her when t start wrking, but she didn’t answer. Mr. Wang tld us what t say at the meeting.
三个例句有何不同：③I wnder hw many bks t buy?动词+疑问词+名词+不定式which、whse、hw many、hw much等可接名词的疑问词，可用这一结构eg: I dn’t knw which skirt t chse. Mm has tld us hw much sugar t add when making a cake.
eg: I’m nt sure when t have a picnic with my family.I’m still nt clear hw t wrk ut the math prblem.
宾语从句简化成疑问词+不定式转化eg: ①D yu knw hw we shuld get t the museum? D yu knw hw t get t the museum？ ②Nina has decided which dress she will buy fr her mun. Nina has decided which dress t buy fr her mum.
情态动词must的用法： 1）表示肯定猜测，意为“一定、肯定”，后接动词原形This bk must be my sister’s. Her English name is n the cver.
eg： ①—Is the man ver there yur uncle? —It can’t be him. He has gne t the UK. “一定不是” ② Jane may nt like cffee. She usually drinks juice. “可能不喜欢” ③ The students had tears in their eyes. They must fell very sad abut the news. “一定感到”
must与have t
情态动词must的用法： 2）表示主观义务或必要，意为“必须”，后接动词原形， 一般用于肯定句和疑问句 eg: I must wrk hard t pass the exam. 若表示客观需要，用have t，意为“不得不”， 后接动词原形 eg：It’s rainy. We have t stay at hme.
eg：① —Must I leave nw? —Yes, yu must. Or yu’ll miss the last bus. ② —Must we give back the bks this weekend? —N, yu needn’t/yu dn’t have t. I can keep them ne mre week.总结：Must I/we 我/我们必须做某事吗？ 回答Yes, yu must.是的，你必须。 N, yu needn’t/yu dn’t have t.不，你不必要。 (dn’t need t也表示“不必要”，但不用于此句型否定回答时)
must nt/mustn’t表示不允许，不是must意思上的否定eg： Yu mustn’t smke here. It’s n smking area. Why must we nt ride a bike here? mustn’t表示禁止，语气比can’t“不可以”更强烈。
句意：——你能给我们一些改善生活环境的好建议吗？——非常乐意。imprve“提高，改善”，特殊疑问词+t d，表示“如何做某事”。故选B。
句意：——这个物理题太难了。你能向我展示怎么解决吗？——当然。B和C选项中what和it都作wrk ut的宾语，宾语重复，排除BC；wrk ut的宾语如果是代词，要放在wrk和ut之间，排除D。故选A。
句意：如果我不知道该和谁说话，我会写信给Sigmund Friend寻求帮助。talk t sb“对某人说话”，wh是sb，介词t不能省略，故AC错误；D选项是wh引导的宾语从句，语序应该是陈述语序，即主语+谓语（+其它），故D错误。故选B。
句意：——先生，你不能在加油站用手机。这很危险。 ——对不起，我不会了。mustn’t绝不；may nt可能不；needn’t不需要；dn’t have t不必。根据“use yur mbile phne at the gas statin”可知，此处表示禁止。故选A。
句意：——我必须马上洗衣服吗？——不，你不必。你可以先打扫房间。must必须；needn’t不必；may可以；mustn’t禁止；can可以；can’t不能；shall将会；may nt可能不。根据“I wash the clthes at nce”可知此处询问必须现在打扫吗，用must，排除D，其否定回答用needn’t，排除BC。故选A。
句意：——我不能戴口罩。太热了。——为了你的健康，恐怕你必须这么做。考查情态动词辨析。may可能；have t不得不；can可以；need需要。根据“Fr yur health”可知，因为健康，不得不戴口罩；故选B。
课后作业：情态动词、不定式练习（附课后作业wrd文档）
1. The new student desn’t knw wh ________ her favrite bks.A．t talk t B．t talk abutC．t talk t abutD．t talk abut t2. lsa has few friends s she really dn’t knw _______ abut her wrries.A．wh t talk B．where t talk tC．hw t talk D．wh t talk t
wh t talk tabut her favurite bks
3. —Daniel, d yu knw ________ the rubbish? —N, it is ________.A．what t deal with; easy enugh fr me t clean B．what t d with; t much fr me t cleanC．hw t d with; t much fr me t clean D．hw t deal with; easy enugh fr me t clean it
what--d withhw--deal with
4. Public signs ften warn us nt t d smething. Fr example, the ne n the right means peple _______ park there. A．might ntB．may ntC．culd ntD．must nt5. —Must I return the bk this week? —N, yu ________. Yu can ________ it fr 15 days.A．needn’t; keep B．needn’t; brrwC．mustn’t; keep D．mustn’t; lend
6. A wrld famus table tennis player says, “As a player, yu ________ be as hard-wrking as yu can.”A．mayB．mustC．canD．need7. With the new lck, yu ________ search fr keys in yur bag any mre. Just use yur fingerprint(指纹).A．needn’t B．can’t C．mustn’t D．shuldn’t
8. As the COVID-19 was fund in Nanjing again, the students ________ study nline at hme.A．culdB．shuldC．mustD．had t9. Accrding t the new traffic rules, peple ________ wear a helmet when riding an e-bike.A．needB．mayC．canD．must
10. —Can we play games here? —Better nt. If yu ________, please g t the pen space there.A．mustB．canC．mayD．will11. —Is Janna playing the pian in the next rm? —It ________ be her. She has gne t Beijing.A．can’tB．needn’t C．mustn’t D．wuldn’t
12. Yu ________ take the bk ut f the reading rm. Yu can nly read here.A．needn’t B．mustn’tC．shuldn’tD．culdn’t13. My cusin is nt sure what _________ (write) abut in the reprt.14. Nne f us knew which rute _________ (take), s we decided t ask a pliceman.15. Sam’s cusins will arrive by plane this afternn, but he frgets where _________ (pick) them up.