Learning English汉中市陕飞二中邵夕霞Fill in the blank. 1. He _ (walk) when he met Tom on the street.2. _ you _(play) football at 9 oclock on Sunday morning.3. When I got home, my mum _(cook) for supper.4. He _( not watch) TV at half past 8yesterday evening.REVISIONwas walkingWereplayingwas cookingwasnt watchingLesson 25Lets Do an Experiment!New words in lesson25science n. 科学 experiment n. 实验;试验 theory n. 理论;学说 fill v. 装满 jar n. 广口瓶 upside n. 上部;上边 prove v. 证明;证实 observe v. 观察;监视A“ theory” is an idea.A theory predicts what will happen. An experiment shows what happens.Do you think what will happen?Listen to the tape and answer the following questions.I. Have you ever done experiments?II. Do you think the cardboard will be down?III.Which theory is right, Brians or Dannys?IV.Can you do the experiment?Language notesi.I fill a jar with water. I cover the top with a piece of cardboard. 1. fill with 用把装满 常用作 be filled with eg: She filled the bag with books.The bag was filled with books. 2. coverwith 用把.覆盖 常用作 be covered with eg: They covered the seeds with earth.The seeds were covered with earth.辨析 fill 与 full fill vt. 装满,充满,使.满 .如果表示装满了 什么东西时,跟介词with. eg: Please fill the box with apples.full adj. 满的,充满的. 多作表语,表示主语所处的状态,常与 of连用,另外full还有”饱了”的意思 eg: The classroom is full of the students.Im full.Language notesii. Im not sure. = Ive no idea. =I dont know.iii. Im sure the floor wont get wet. be sure 确信的;有把握的,常用结构: be sure of; be sure+ that 从句. eg: Im sure of the key to the question. 我对这个问题的 答案有把握 辨析:be sure of doing sth.与 be sure to do sth.be sure of doing sth. 是对自己而言,而be sure to do sth.则是对别人或其他物而言,除非是祈使句.eg: They are sure of winning the match.(是他们自己有信心)They are sure to win the match.(别人对他们有信心)Language notesiv. Brain has one theory ,and Danny has another.one .another (one)一个.另一个表述两个以上的事物 时,可以用这种表达方式此时的 another表示不特指的另一个. eg: Would you like another apple? 表示两个或两类事物时,须用one the other (one)或some the others表达. eg: The old man has two sons, one is a worker, the other is a doctor.All of the students are on the playground. Some are playing basketball, the others are watching them.Language notesV. We ll do the experiment and observe what will happen.i.observe vt.观察 eg: I observe that they are talking in class.observe sb.doing sth./ do sth. 用法与hear /see/ watch/find/notice相同.observation n.观察，评论。Make an observation 发表意见eg: He made an observation on my plan of trip.ii. happen vi.发生 用物做主语 What happened? 2. happen to sb. 某人发生什么事？ What happened to Danny? 3. happen to do sth. 碰巧做某事.主语可以是人也可以 是物.When I went for a walk, it happened to rain.辨析 happen 与 take place1. Happen 发生,带有偶然性,主要是碰巧发生.Yesterday morning a bad accident happened on the street.2. take place 发生,主要指经过安排的,事先准备好的.The Olympic Game will take place in London in 2012.Exercises用所给单词的正确形式填空1.Guess what _ (happen).2.I think the floor _(get) wet.3.Lets do the experiment and see what _(happen).4.We can prove who _ (be) right.5.Observe is another way of _ _(say) watch carefully.will happenwill gethappensissayingSummaryfill with coverwith be sure one .another observe happen take placeHomeworkThe exercises in the exercise book.The EndThank you!