英语 必修3 unit4 导学案.ppt

* 课前复习 合作探讨1：学生疑问 合作探讨2：教师疑问 本课小结 巩固练习 学生疑问： be to do 与 be about to do 都可以表示将来，有何区别？ 还有哪些形式可以表示将来时？ My room is twice as large as his 与 My room is twice larger than his 意思相同吗？ Watch out 与watch over 的用法？ 教师疑问： I think it hard to learn English I think it is hard to learn English. 请划分以上两个句子句子成分，并指出其中it 的用法 be to do 的用法： ①“按计划或安排将要做的事情”，（通常指非常正式的计划或官方计划） Hu Jintao is to visit Japan next week. ②或表示某事“注定发生”。 You are to be famous. ③ If从句中加be to do,含义为“想要” If we are to be there before ten, we’ll have to go now. ④表示义务（相当于should),命令（相当于must，have to) I am to blame for what has happened You are to hand in your homework tomorrow. 小窍门：义务命令和想要 计划安排注定考 注意： be to do 还可以表示对句子主语的解释说明，此时to do 作be 的表语，不表时态。 My job is to teach English. = My job is teaching Englis. =To teach English is my job. =Teachig English is my job. 与be about to do 区别： be about to do 表示即将，马上就要发生的动作，不与时间状语连用，但可以和when 引导的状语从句连用。如： I was about to leave tomorrow (×) I was about to leave when she came.(√) 而be to do 可以与时间状语连用 Hu Jintao is to visit Japan next week 完成句子或翻译。 1). Here is a message for you from your head teacher: you ______ ______ ______ to her office after class. (你的班主任给你一个口信，要你下课后到她的办公室去。) 2). The worst is still ______ ______ (come). 更糟糕的事情还会发生。 3). We’ ll hold a meeting tomorrow. = We ______ ______ ______ a meeting tomorrow. = A meeting is ______ ______ ______ tomorrow. 4). 如果你想要成功，你必须得努力。 If you are to succeed, you must work hard. 单选: She to bed whe she received an call form her best friend. A. was going B. would go C. was about to go D. went are to go to come are to hold to be held c 将来时间表达法： be to do 2. be about to do 3. will/ shall do I will go to open the door (临时决定） 4. be going to do I am going to London tomorrow( 计划安排） It is going to rain, for it is cloudy.(有迹象表明） 5. do （一般现在时） If