B4U1重点句型ppt课件

B4U1重点句型,1,1.现在分词作状语,表伴随，相当于一个并列句。 Following Janes way of studying chimps, our group are all going to visit them in the forest. (P2L2) 按照詹尼研究黑猩猩的方法，我们这群人都将看到森林中的黑猩猩。 分析：following Janes way of studying chimps是现在分词作状语。 (1)一听到老师的声音，学生们立即停止讲话。 Hearing the voice of the teacher, the students stopped talking at once. (2)因为不知道如何解这道难题，他求助老师。 Not knowing how to settle the problem, he turned to his teacher.,2,. while 从句 Everybody sits and waits in the shade of the trees while the family begins to wake up and move off. 当黑猩猩睡醒准备离开的时候，大家坐在树荫下等着。 (1)while 可以引导时间状语从句，表示“当的时候；和同时；在时”; Her parents died while she was still at school. 她还在读书时父母就去世了。 (2)while还可引导让步状语从句，表示“虽然，尽管”。 尽管他有缺点，我还是喜欢他。 While he has shortcomings, I still like him.,3,(3) while 可以连接并列句，表对比。意思是：而，然而。 他讲了两个故事，前者很有趣，然而后者很枯燥。 He told two stories. The former was interesting while the latter was boring . (4) while从句中的省略。当while从句中的主语与主句的主语一致，且谓语含有be的某种形式时,从句中的主语连同be动词可同时省略。 她在听收音机的时候睡着了。 While she was listening to radio, she fell asleep. = While listening the radio, she fell asleep.,4,. once 从句once引导条件状语从句，意为“一旦”。 Once I stop，it all comes crowding in and I remember the chimps in laboratories. 我一旦停下来，所有的一切都会涌上心头，我就会想起实验室里的黑猩猩。 完成句子： 1) 一旦养成了坏习惯，你就很难改掉它。 Once you get into a bad habit , its very difficult for you to get rid of it. 2) 他一旦下定决心，就没有什么可以改变他。 Once he has made up his mind, nothing could change it.,5,. “only状语”（介词短语、副词、从句等）位于句首时，后面主句用部分倒装。（only状语+be/助动词/情态动词+主语） Only after her mother came to help her for the first few months was she allowed to begin her project. 她母亲头几个月来帮她的忙，这才使她得以开始自己的计划。 只有当我离开父母去意大利时我才意识到我是多么的爱他们。 Only when I left my parents for Italy did I realize how much I loved them. 只有那时我才意识到我浪费了那么多的时间玩电脑游戏。 Only then did I realize how much time I wasted in playing computer games.,6,只有靠这种方法，我们才能按时完成。 Only in this way can we finish it on time 注意：修饰主语时，虽在句首，也不可倒装。 只有一些学生通过的考试。 Only some students passed the examination. 只有你能帮我。 Only you can help me.,7,“It hits/hit sb.从句”表示“某人突然想起”。 Suddenly it hit me how difficult it was for a woman to get medical training at that time. 我突然想起在那个年代，一个女子去学医是多么难。 句中使用了“It hit(s) me从句”结构，意思是“我突然想到”，it在句中作形式主语。 完成句子 我突然想起我忘记了去机场接我的朋友。 It hit/struck/occurred to me that I forgot to go to the airport to pick up my friend. 住院一个星期后我突然了解到没有比健康更重要的东西了。 After hospital life for a week it hit/struck/occurred me that nothing is more important than health.,8,我突然想起，我把她的生日忘了。 It hit me that I had forgotten her birthday. 类似的结构还有： It occurs to sb.that.(某人)突然想到 It strikes/hits sb.that.(某人)突然想到 It happens that.碰巧,9,why not do sth. “为什么不做某事呢” 提建议的交际用法。 Why not study at medical college like Lin Qiaozhi and carry on her good work? 为什么不像林巧稚一样在医学院学习并继续她的美好事业呢？ 完成句子： 为什么不养成锻炼身体的习惯来保持身体健康呢？ Why not form the habit of exercising to keep fit? 为什么不坚持工作呢？ Why not carry on working?,10,not.until.直到才 I did not know the answer until one evening when I sat down at the computer to do some research on great women of China. 直到一天晚上当我坐在电脑旁搜索中国伟大女性的时候我才知道答案。 完成句子： 昨晚直到妈妈回来了，汤姆才睡觉。 Tom didnt sleep until his mother came back home last night. - Not until his mother came back did Tom go sleep. 昨晚直到九点，我才开始做作业。 I didn t do homework until 9 o clock last night. - Not until 9 o clock last night did I do my homework.,11,not until的倒装与强调结构 1.当Not until位于句首时,句子要倒装.其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+.如: 直到老师进来学生们才停止讲话. The students didnt stop talking until the teacher came in. -Not until the teacher came in did the students stop talking. 直到下周才开运动会. The sports meet wont be held until next week. -Not until next week will the sports meet be held.,12,2. not until的强调结构为:It is / was not until+从句/表时间的词+that+.上面两句改为强调句为: 直到老师进来学生们才停止讲话. The students didnt stop talking until the teacher came in. -Not until the teacher came in did the students stop talking.（倒装） -It was not until the teacher came in that the students stopped talking.（强调） 直到下周才开运动会. The sports meet wont be held until next week. -Not until next week will the sports meet be held. -It is not until next week that the sports meet will be held.,13,运用 根据汉语意思完成英文句子。 电脑的应用使我们的工作更有效率。 Using computers _ _. 运动使我们健康强壮。 Having sports _ _.,8. make+宾语adj. 作宾补 使怎么样,14,(3) 使我哥哥后来成功的是他丰富的知识和巨大的决心。 What made my brother succeed later on was his broad knowledge and great determination.,15,Homework,16,(1)我突然想到对我来说要在广州买套房子有多难。 Suddenly it hit me how difficult it was for me to buy a flat. (2)我突然想到我应制定计划过上幸福生活。 Suddenly it hits me that I ought to make a plan to live a happy life. (3)我突然觉得他说话的样子就是看不起我。 Suddenly it hit me that the way he spoke to me meant looking down upon me.,17,4. 只有在那时，她才意识到她的错误。 Only the did she realize her mistake. .只有通过努力学习，你才能在学习上取得进步。 Only by working hard will you make progress in your study. .只有当我到达山顶时，我才有极大的成就感。 Only when I reached the top of the mountain did I feel a great sense of achievement.,18,.直到他考试失败了，他才意识到努力学习的重要性。 He didnt realize the importance of studying hard until he failed in the exam. 8.直到进入大学她才实现了自己的梦想。 She didnt achieve her dream until she entered the university.,19,