What do many people think of the life by the year 2100? They believe ____________________________ by the year (that) we will live on the planet Mars

Who will do most of the work on Mars? People think _______________________ most of our work. And they are sure ________________ time for their hobbies. (that) robots will do (that) they will have

1.I hear (that) _______________________. 2.He said (that) ______________________. 3.The teacher told us (that) _______________ ________________. 4.I’m afraid ____________________________. he will be back in an hour he liked basketball very much the earth moves 1) 由 that 引导的宾语从句 注： that 在句中无词汇意义，在从句中不能 充当成分，在口语当中往往省略 around the sun that I have made a mistake ( 他一小时后回来 ) ( 他非常喜欢篮球 ) ( 地球绕着太阳转 ) 我犯了一个错误

Object clauses introduced by ‘that’ People think (that) robots will do most of our work. Many people believe (that) we will live on the planet Mars by the year Many people are sure (that) they will have more time for their hobbies. From the sentences, we know (that) an object clause can be put after some _______, such as ‘think’, ‘believe’, ‘know’, or after some ___________, such as ‘sure’, ‘certain’. verbs adjectives

Many people believe (that) we will live on the planet Mars by the year 2100.( 改为否 定句 ) Many people don’t believe (that) we will live on the planet Mars by the year Many people believe (that) we will not live on the planet Mars by the year √ We always put ‘not’ before ‘think’ and ‘believe’.

Try to find out whether it is an object clause or not. 1.These plants will produce food and oxygen that we need to live on Mars. 2.Scientists will develop plants that can grow on Mars. 3.People think that humans on Mars have to wear special boots to make themselves heavier. 4.We all know that Mars is a planet in the solar system. 5.The journey to Mars could take only a very short time in space shuttles that travel at half the speed of light. 6.Some scientists do not believe that the journey to Mars will be very comfortable.

哪些主句后跟 that 引导的宾语从句呢 ? I (don’t) believe/ think /suppose( 猜想 ) /expect( 期待 )/imagine( 想象 ) that… I hope/wish that… I’m glad/ happy/pleased / sorry/ afraid/ sure/ certain/surprised/ that …

Can any plants grow on Mars now? We don’t know/are wondering/are not sure ___________________ on Mars. if/whether any plants can grow

Can any plants grow on Mars now? We don’t know/are wondering if/whether any plants can grow on Mars. We use the same word order as in a statement. Correct the sentence; Is living on Mars safe? After reading the book, Tom was wondering if is living on Mars safe? living on Mars was

Many people are sure that some plants can produce enough water on mars, aren’t they? No, nobody is sure ___________________ _______________________________ on Mars or not. whether any plants can produce enough water

We don’t know/are wondering if/whether any plants can grow on Mars. Nobody is sure whether any plants can produce enough water on Mars or not. From the two sentences, we know that we can use ______ or __________ to introduce an object clause when it expresses a ‘yes/no’ question. ifwhether When we see the word ‘or’, we can only use ‘whether’.

只能用 whether 不能用 if 的情况 1. 在介词后面： I’m thinking of whether we should go fishing. We are worried about whether it will rain tomorrow. 2. 在动词不定式前： They asked me whether to go skating.

3. 当与 or not 连用，或提出两种选择时 : I don’t know whether he’s free or not. Mary asked whether I was doing my homework or not. Tell me whether you’d like to go shopping or tidy the room. 4. 宾语从句提前时： Whether this is true or not, I can’t say.

2) whether, if 引导的宾语从句 I want to know _______________________ _______________. 2. Ask him _________________________. 3. I wonder ____________________________. if (whether) he has come up with new ideas if (whether)he is satisfied with the result of the match. whether it is going to rain or not if/ whether “ 是否 ” ，说明对陈述的事物不明确或不清楚。 常用在 ask, wonder, doubt,can(could) you tell me 等 后。 他是否想出了新主意 他是否对比赛结果感到满意 天是否将要下雨

1. Will transport on Mars be much better than on Earth? Are you certain ____________________________ __________________________________________? 2. Is gravity a problem for the early travelers on Mars? Can you tell me ___________________________ _________________________________________? 3. Does it take very long to travel from Earth to Mars? Do you know _______________________________ _____________________________________? if/whether transport on Mars will be much better than on Earth if/whether gravity is a problem for the early travelers on Mars if/whether it takes very long to travel from Earth to Mars

4. Are many people going to move to Mars? Can you tell me ____________________ _________________________________? 5. Did the USA send a space robot onto Mars last year? Do you know ______________________ _________________________________? if/whether many people are going to move to Mars if/whether the USA sent a space robot onto Mars last year

Help Daniel finish his diary about what he has found about living on Mars with ‘that’, ‘if’ or ‘whether’. Do you believe ________ man will be able to live on the planet Mars in the future? Scientists are working hard to make this dream come true. However, they are still not sure ______ we could grow plants on Mars. Also, many scientists think _______ gravity is a problem for the first settlers. They all agree _________ the journey to Mars will not be comfortable. Therefore, I am wondering ________ there will be many people willing to move to Mars or not. that if/whether that whether

Homework: Translate the following sentences. 1. Miss Wang told me _________________________________( 地球绕着太阳转 ). 2. Li Feng said __________________________________ ( 他去过上海三次了 ). 3. I want to know _____________________________. （他 是否跟我们一起去公园） 4. I hear _____________________________________. （一 小时后他会回来） 5. Mary asked __________________________________. ( 我是否完成我的作业了 ) 6. Lily said _______________________________ ( 她在看杂 志 ) when I called her. 7. I believe ________________________________ (Tom 正 忙着在网上搜信息呢 ). 8. The twins said _____________________________ （他们 将参加运动会） the next week.

9. 我想知道你喜欢溜冰还是滑雪． I wonder _______________________________ 10. 我相信他不会做任何违法的事。 I_____________________________________ 11. 警察说他们将尽快抓到凶手。 The police said__________________________. 12. 请注意老师说的话。 ——————————————————