情态动词musthaveto.ppt
《情态动词musthaveto.ppt》由会员分享,可在线阅读,更多相关《情态动词musthaveto.ppt(12页珍藏版)》请在三一文库上搜索。
1、,基本 形式,Must Have to,基本 意义,特殊 用法,表示 推测,巩固 练习,Must have to 肯定式 must do have/has/had to do 否定式 must not do dont/doesnt/didnt have to do neednt/dont have to 疑问式 Must + sb. + do ? Do/does/did + sb. + have to?,由must引起的疑问句,肯定回答要用must或have to, 否定回答要用neednt或dont have to, 意思是“不必”. Must I finish the task right
2、 now? Yes, you must. / Yes, you have to. No, you neednt. / No, you dont have to. Mustnt 表示禁止,意思是“不准”,Must 和have to 的区别: I must learn another language. I have to learn another language. Tom must shave every morning. Tom has to shave every morning. 妈妈不在家,因此我不得不照看商店。 Mother is out, so I have to look af
3、ter the shop. 我要留下来照看店。 I must look after the shop. 你留下看店。 You must look after the shop.,(主观愿望:I want to),(客观需要:我跳槽去了 法资企业。),( 军人服从命令),( 他长着一脸大黑胡子),必须,不得不,Must 表示猜测,常用于肯定句中,意思为 “一定是, 必然”。 注意must表示推断或猜测的几种情况: 你姐姐一定是这家医院的医生。 (表现在的猜测) Your sister must be a doctor in this hospital. 他此刻一定正在阅览室读报。 (表正在进行的
4、猜测) He must be reading newspapers in the reading room now. 昨晚一定下雨了,因为地面上是湿的。(表过去的猜测) It must have rained last night, for the ground is wet. Have to 不能表推测,must + be doing,must + do,must + have done,Mike, you _ play with fire. You_ burn yourself. A. wont; cant B. mustnt; may C. dont have to; must D. h
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 情态 动词 musthaveto
链接地址:https://www.31doc.com/p-3210631.html