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1、课题Unit 4第3课时课型新授编号4-3学科英语班级七年级领导签字执笔人使用人使用时间学习目标1、总结归纳Section A部分语法重点;2、并将所学知识学以致用。学习重点、难点Section A部分语法重点课时安排1课时自主预习翻译1. be on time for class_2. in class_3. wear a uniform _4. 梦想的学校_5. 不必_ 展示交流Step 1 ReviewReview the new words in Section A.Step 2 PresentationRead the sentences in Grammar Focus and t
2、ry to remember them by heart.Step 3 Practice(1) Check the answers in 3a. Read the sentences.(2) Check the answers in 3b. Read the sentences.Step 4 ConsolidationMake up five cool rules for a dream school. Vote for the Coolest School. 知识探究What do you have to do ? 你们必须做什么?have to 与其他情态动词一样后接动词原形,表示客观上的
3、需要,强调被迫性,有“不得不”的含义。 have to 可用于多种时态,形式随时态变化而变化,还可以用在其他情态动词之后。如:We have to work hard. 我们得努力工作。 I think he may have to help his dad in the garden. 我想他可能不得不在花园里帮他爸爸。【辨析 have to 与 must】(1) 表达意见上的差异: must 表示说话人的主观意图和要求,相当于汉语中的“必须”;have / has to 表示由于外部环境、情况、习惯等的客观需要,相当于汉语中的“不得不”。 如: You must do your homew
4、ork now. 现在你必须做你的功课。 He has to study late into the night to pass the exam. 为了通过考试,他不得不学习到深夜。(2)在否定句和疑问句中,have to 需借助于助动词do 相关形式,而must 则直接用mustnt 或将must 提到句首。如:Your mother doesnt have to do that now. 你妈妈现在不必做那件事情了。You mustnt play football in the street after class. 放学后,你们一定不要在街上踢足球。(3)must 不能与其他助动词wi
5、ll,shall 等连用,因此这种情形下要用have to。 Must 没有过去式,因此用于过去时应用had to (表示过去必须做,并且做到了)。如:Shall we have to meet at the gate of the school? 我们必须在校门口相见吗?He had to get up early to catch the early bus. 他不得不起早床,去赶早班车。巩固提升 ( )1. I have to _ the room every morning. A. clean B. cleans C. cleaning( )2. Does she have to go to bed at 9:00? Yes, she_. A. has B. have C. does( )3. Dont listen music in the classroom hallways. A. to; andB. to; or C. at; or( )4. She lost her bike. She _ walk to school. A. have to B. has to C. has( )5. We _to wear the school uniform every day. A. not have B. have not C. dont have2
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