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2021春季七年级下册课文重难点讲解unit4
展开Unit4 Don’ eat in class.课文重难点讲解【教师寄语】:Care and diligence bring luck. 谨慎和勤奋才能抓住机遇Section A1.Don’t arrive late for class. You must be on time. 上课不要迟到,你必须准时【解析1】 ⑴arrive v 到达,抵达 arrive in+ 大地点 /arrive at + 小地点=reach+地点 =get to +地点 到达某地【注】: 如果arrive/get 后接地点副词( here, there , home等)时, 介词要省略。 get home 到家 arrive there 达到那里 【解析2】be late for “迟到”(固定短语) ( ) Jim is often _____ for school. A. late B. lately C. later D. much lately【解析3】on time/ in time (1) on time= at the right time “准时,按时”(不早不晚) The train came in on time. 火车准时进站(2) in time 指“及时”, 表示动作在规定的时间内或提前发生。 You’ll get there just in time . 你会及时到达那儿的。2. Don’t fight . 不要打架。【解析】fight →fought v 打架 have a fight with sb. 和某人打架3. Listen to music in the classroom or hallway. 在教室或过道上听音乐 【解析】 Listen / hear 辨析【相同点】:听 【不同点】(1) listen 强调听的动作,意为“听”。后接宾语时,必须加介词to. Mr. Wu asked students to listen to him carefully.(2) hear 强调听的结果,意为“听到”。后直接跟宾语。 I can hear a girl singing.4. And we always have to wear the school uniform. 并且我们要一直穿校服【解析1】have to 不得不 ,后接动词原形,表示由于客观需要不得不作某事 (1)肯定结构:主语+have to +动词原形+… 一般现在时,主语是第三人称单数时,用has to ; 一般过去时,任何主语都用had to My mother is ill, I have to stay at home and look after her.(2) 否定结构;主语+don’t have to+动词原形+… 一般现在时,主语是第三人称单数时用doesn’t have to ; 一般过去时,任何主语都用didn’t have to… (3)疑问结构: Do/Does/Did +主语+have to +动词原形 must 必须,应当 表示人的主观看法 We must finish our homework every day.①You have to give up smoking . (改为否定句) _____________________________________.【解析2】(1) wear v 穿着, 戴着 (强调穿的状态)=be in宾语可以是衣帽,也可以是饰物、奖章等。He always wears a red T-shirt. (2) dress v给……穿衣服 宾语通常是人 dress sb. 给别人穿衣服(动作)dress oneself 自己穿上衣服(动作) get dressed 穿上衣服(动作) My son is now able to dress himself. 我儿子现在自己会穿衣服了。 【解析3】 put on “穿上、戴上”,强调“穿”“戴”的动作,后接衣服、鞋帽等。 Put on your coat if you want to go out . 如果你要出去,穿上你的厚冬衣。 5. This is a great school, but there are a lot of rules. 这是一所很好的学校, 但是有许多纪律【解析】but/ and/ or 辨析(1) but conj. “但是,可是” ,表示前后意思的转折。 He’s young , but he plays the piano well.(2) and “和,又” 表并列,连接词与词、短语、句子等。 I bought Linda a present, and she liked it very much.(3) or “或者” , 表选择关系。 Can you play the piano or violin?6. Can we bring music players to school? 我们可以带音乐播放器到学校吗?【解析1】bring/ fetch/ take辨析(1)bring 是指“带来、领来、取来、送去”。 (从别处从别处往说话人这里拿) bring sb/sth to +地点 把某物带到某地 Bring your friend to the party. 请带你的朋友来参加聚会。⑵fetch 是指“去拿来”,也就是说,既包括“去”的意思,又包括“来”的意思。 Can you fetch me a book.⑶take 是指 “拿走、取走”。 (指从说话人这里往别处拿)Take the letter to the post office. 把这封信送到邮局去。7. Oh,and we also have to be quiet in the library. 哦,在图书馆我们还必须安静。【解析】be quiet = keep quiet 保持安静。( ) Be ______ ! My younger brother is doing his homework. A. quiet B. quietly C. quick D. quicklyI.翻译下列短语1.在课上__________________ 2.学校规章制度__________________3.上学迟__________________ 4.在过道__________________5.听音乐__________________ Unit4 Don’ eat in class.课文重难点讲解Section B.& Self Check1. on school nights 在上学日的晚上 【解析】1) on 表示具体的某天或某天的上午/下午/晚上 on a cold winter evening 在一个寒冷的冬夜2) at 表示某一具体的时刻 at ten o’clock 在10点钟3) in 表示时间段 in the morning 在早上2. practice the guitar. 练习吉他 【解析】practice makes perfect . 熟能生巧practice doing sth. 练习做某事3. help his mom make breakfast. 帮妈妈做早饭 【解析】help sb.(to) do sth = help sb. with sth 帮助某人做某事【拓展】 help oneself to sth 随便吃某物 can’t help doing sth 禁不住做某事 with the help of sth在某人的帮助之下4. There are too many rules. 有太多的规矩了!【解析】1)too many 太多 后跟可数名词复数形式2) too much 太多,后跟不可数名词3) much too 太 , 修饰形容词5. get up now and make your bed! 起床了,把被子折起来!【解析1】 get up 起床 【短语】 get on/along with sb. 与某人相处 get off 下车 get on 上车 【解析2】make one’s bed 整理床铺【短语】 make faces 做鬼脸 make a mistake 犯错 make tea 沏茶 make sure 确保 make friends with 与……交朋友6. “ Don’t leave the dirty dishes in the kitchen!” 别把脏碗丢在厨房里【解析】leave v “搁, 放, 留下” leave sth +介词短语 把 某物遗忘在某地 I often leave my schoolbag at home.【拓展】forget v “忘记某物” ,指忘记具体的东西,不能与表示地点的词或短语连用 Don’t forget the tickets and umbrella.( ) He always _____ his homework at home. A. forget B. forgets C. leave D. leaves7. I never have fun.我从未开心过!【解析】have fun = have a good time = enjoy oneself 玩得高兴,过的愉快have fun doing sth 很开心做某事单元语法专讲:语法专讲(一) :祈使句祈使句 通常用来表示命令、请求、禁止、建议、警告等语气。它的主语you(听话人)通常省略。其构成通常有以下几种形式。 1)Be型(即系动词原型be+表语+其他)。 如:Be quiet, please. 否定句Don’t + be+表语+其他。 如:Don’t be angry. 2)Do型(即实义动词原形+宾语+其他)。如: Open you books ,please. 否定句Don’t +实义动词原形+宾语+其他。 如:Don’t eat in the classroom. 3)Let型(即Let+宾语+动词原形+其他)如: Let me help you. Let’s go at six o’clock. 否定句一般在宾语后加not。如: Let’s not watch TV. 4)No+ V-ing型(此种形式通常用于公共场合的提示语中,意为“禁止做某事“)如: No smoking! 严禁吸烟! No talking! 不许交谈! No passing! 禁止通行! No parking! 不许停车语法专讲(二) :情态动词have to 的用法 情态动词have to 的用法,意思是"必须、不得不",它侧重于客观上的必要和外界的权威。(1)结构:主语+have to+动词原形+(主语是第三人称单数时,用has to) We have to (穿)sneakers for gym class. 在体育课上,我们必须穿运动鞋。Tom has to (练习) guitar every day. 汤姆每天必须练习弹吉它。(2)否定形式:主语+don't have to do sth. ==== 主语+ needn't do sth. 常翻译成“ ...没必要做某事,不必...”(单三人称时,用doesn't have to. needn't 适合任何主语)如:Nick wear a uniform. 尼克不必穿制服。We do our homework at once. 我们不必马上完成作业I don't have to go to school today.. ==== I needn't go to school today.(3)疑问句:Do /Does+主语+have to +动词原形+其他如: you stay at home on weekends? 周末你必须呆在家里吗?Yes, I do. / No, I don't.
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