英语：UNIT4 ASTRONOMY：THE SCIENCE OF THE STARS-READING语言点讲解课件（新人教版必修3）.ppt

1、Language points1.What it was to become was uncertain until 他昨天直到七点才离开学校.He didnt leave school until seven oclock.他们到了中国才能看了长城.The couldnt see the Great Wall until they came to China.It was not until they came to China that they could see the Great Wall.Notuntil直到才It is/was not until that 强调句It was n

2、ot until seven oclock that he left school.2.(sth)be to(do):1.不可避免要发生或必须发生。They said goodbye,little knowing that they were never to meet again.She is to be honoured for this great work.2 表示按计划、安排要发生的动作We were to have been married last weekThe train is to arrive in BeiJing at 10:25Tell her she is not

3、to be back late!3 表命令3.They were in time to produce carbon,which were to make important is in time:及时;最终in time(for sth./to do sth.):及时；不迟我迟早会遇见他.Ill see him_.她会及时回来准备晚餐.She will be back _ prepare dinner.你认为我们能及时赶上火车吗?Do you think we can get there _the train?in time forin timein time to 与time相关的短语:o

4、n time 按时;准时In no time 立刻,马上at times 有时at a time 每次;依次once upon a time 从前cool 1)v.Please open the window to cool the room.Dont drink the tea before it cools a little.2)adj.凉爽的，冷静的，沉着的，冷漠的，冷淡的be/get/seem/keep cool His songs received a cool response from the public.4.As the earth cooled down,water beg

5、an to appear on its surface.随着地球的冷却,地球的表面就开始出现了水。cool downa.凉快起来，冷却b.指人的心境“平静下来，使平静下来”A heated argument can be settled better if both sides cool down first.I tried to cool her down but she was still very angry when she left.Dont cover the TV until it cools down.allowed the earth to dissolve harmful

6、gases1)allow sb.to do=permit sb.to doMy father doesnt allow_ at home.In fact he doesnt _ anywhere at any time.2)Harmful adj.Opp:harmless harm n.be harmful to sb./sth.=do harm to sb./sth.对有害过多的二氧化碳对环境有害.Too much carbon dioxide is harmful to/does harm to the environment.smokingallow us to smoke6.This

7、produced a chain reaction,which made it possible for life to develop.1)Chain reaction 连锁反应2)Make it possible to do使.成为可能make it+adj.+(for sb.)to do sth.组长让我们可以一起合作.The group leader _老师让他们很容易地明白那个问题.The teacher _.made it possible for us to work together.made it easy for them to understand the questio

8、n.7.They multiplied and filled the oceans and seas with oxygen,which encouraged the 1)Multiply v.乘,增加,繁殖蚊子在夏天繁殖得很快.Mosquitoes multiply rapidly in summer.2)encourage v.鼓励,促进encourage sb.to do sth老师鼓励我们上课说英语.The teacher encourages us to speak English in class.我那是第一次见到她.I saw her_.十年后,他第三次来到这里.Ten year

9、s later,he came here _这是我第二次见到他.It is_.第一次见到他,我就爱上了他.I loved him _.the second time that I have seen himthe first time I saw himfor the first timefor the third time.8.The laid eggs too and existed on the earthexist in 存在与之中exist on 靠为生exist by 靠生存It was impossible for them to _such a small income.The

10、 universe _space.exist onexists inThe wild man _hunting wild animal in the forest.existed by 9.Remain1)系动词.保持,仍然是In fact,the work remained unfinished2)remaining adj.剩下的The remaining students will serve for the audience.3)Remain to be done 有待,尚待It remains to be seen whether you are right.10.which pre

11、vents heat from escaping fromprevent (from)doing sth.阻止做某事同义词组：stop(from)keepfrom（此处from不能省）我们被阻止在课室吃早餐We are prevented/kept/stopped from having breakfast in the classroom.11.millions of years to come will depend on whether depend on sb.依靠,相信某人depend on sth.取决与某物我们都靠你来做决定了Well all _to make a decisio

12、n.明天是否能开校运会取决与天气Whether to hold the sports meeting or not will _.depend on youdepend on the weatherWord study:Translate the following into English1.把当作2.太阳系3.总有一天；及时4.一般地说来5.信赖；取决于6.目前7.做出选择8.天文学9.氧10.阻止think of assolar systemin timegenerally speakingdepend on at presentmake choices astronomyoxygen prevent from Goodbye!thanks!