人教新起点一年级英语下册课件Unit154

1、Make up new dialogs in pairs according to the one in 1. You can suppose theres something wrong with your bike, telephone or TV.,1. happen =(take place) vi. 引起，发生。e.g. Accidents will happen.很有可能会发生意外。 What happened when you told him the news? 你告诉他这消息时, 他有何反应?happen to sb . 发生在某人身上,Language points,A c

2、ar accident happened to her this morning. 今天早晨她出了车祸。 happen to do 碰巧，恰好，偶然 例句： “How did he happen to do that? “他怎么会干那个的?” We happen to hold the same view.,2. ask sb. for sth. 向要求，请给予例句: Everybody was now asking him for advice. 所有的人都在请求他给予意见。 ask sb. for help. 向某人求助。 I will ask you for help when I ne

3、ed. 我需要时我会向你求助的。,3. press vt. 压；按；揿；扳。 例句: Press this button to start the engine.要开动发动机就按这个按钮。,4. useless adj. 无用的；没好处；不起作用。 例句: Its useless to argue with them. 同他们争论是没有用的。 反义词为 useful,useful adj. 有用的 She is a useful person to know. 她是个应该结交的有用的人。,homeless adj. 无家可归的 例句: He was homeless, so we took h

4、im in. 他无家可归, 我们就收留了他。 -less 是形容词的后缀，表示“没有， 无”的意思。,Grammar focus,Certainty and uncertainty,仔细观察下面的例句，然后补全结论部分所缺的内容。,A. Im sure of his honesty. B. Im sure (that) smoking is bad for our health. C. Are you sure (that) he lives happily? Yes, Im sure about it. D. Hes not sure whether / if they will take

5、part in the football game. E. Im not sure why he wants it.,从例句A、C中我们发现，be sure常常和介词1_或2_连用。从例句B、C中我们发现，be sure在肯定句或疑问句中，后面常常接3_引导的从句，此连接词可以省略。从例句D、E中我们发现，be sure在否定句中，后面常常接4_或5_、疑问代词或疑问副词引导的从句。,of about,that,if whether,请将下列汉语句子翻译成英语。 1. 你确定他们今天能来吗？ _ 2. 我不确定她现在是否在图书馆。 _ _ 3. 我确信将来你会成为一名歌唱家。 _,Are yo

6、u sure that they can come today?,Im not sure if/ whether she is in the library now.,Im sure that you will be a singer.,sure的用法,sure一词在中学英语中是一个常见的词，但你对它的用法掌握了多少呢？ 1. 用作形容词 1) 常用于be sure of, be sure to do, be sure that结构中。,例如： You may be sure of his honesty. /You may be sure that he is honest. 你可以确信他的

7、诚实。 Im sure of winning the game. 我有把握能赢得比赛。 He is sure to be back soon. 他一定会很快回来。 Be sure not to forget it. 千万别忘了。,be sure of 与be sure to do的区别： be sure of 和be sure that一样，主语是人，主语感到“有把握；确信”； be sure to do的主语可以是人，也可以是物， 表示说话人推测“一定；必然会”。,例如： He is sure of his success. /He is sure that he will succeed.

8、 他确信他会成功。 He is sure to succeed. 他一定会成功。(说话人的看法),2)make sure of/ make sure about /make sure that /make sure to do有“弄清楚；查明”之意。例如： She made sure that she turned off the light. 她确定她已关灯了。 Make sure to lock the door before you go out.出去之前一定要锁上门。,另外，常见的与sure相关的短语还有：be sure of oneself 有自信心，for sure的确；确实地。

9、2. 用作副词 主要用于口语，此时的“Sure.”相当于“Of course.” 与“Certainly.”。,Fill the blanks with (be sure to/be sure of).,1) He _ take good care of himself. 2) I _ taking good care of himself.,is sure to,am sure of,Recite the useful expressions in 3b. And finish 4 with your teacher.,表示推测的情态动词部分用法,肯定的推测 must, should, ma

10、y (might) 或 could（一般不用can) 其中，must的语气最强，译为“一定，准是，想必是”；may(might) , could的语气最弱，译为“也许”、“可能”。,如： The computer doesnt work. There must be something wrong with it. 这台计算机开不了机。一定是有什么毛病了。 It should be fine tomorrow. 明天很可能天晴。,If you look at the moon, you may/might have many questions to ask. 如果你看看月亮，或许会有许多问题

11、要问。 This project could create 5,000 new jobs. 这项新工程可能给5千人带来新工作。,否定的推测 表示可能但不是肯定无疑时，常用should not(恐怕不会) ，或用may not, might not或could not，译为“可能不，也许不”；否定语气较强时，则用cant或couldnt，译为“不可能”。,如： Dont worry, your father may not have been hurt seriously. 别急，你父亲也许伤得不厉害。 He might not be in England. 他或许不在英国。,There shouldnt be any diffic