人教新目标（Go for it)版英语八年级下册 正确理解主语从句中，Whether和If之间的区别(1)（课件）

这是一份人教新目标（Go for it)版英语八年级下册 正确理解主语从句中，Whether和If之间的区别(1)（课件），共19页。
The distinction between If and Whether in Noun Clause “Whether ”can be used in all of the Noun Clauses. However, “if ”just can be used in Object Clause. It can’t be ellipsis both whether and if.I don’t know whether/if they will come to go camping with me.Whether and if often use in Object Clause. The difference is small between them, so they can use interchangeably.Also ，it’s not clear to me whether/if they like my plan.If you use the formal subject “It ”，you can use “whether or if ”.Would you like to go camping with me?Of course, but I don’t know whether(if)it will rain or not.=of course, but I don’t know whether or not it will rain.(you can’t use if)Whether and if can be used with “or not ,but whether and or not are writing no spaces or after the verb phrase，just using the whether.in Object Clause, you should notice: Mickey asked you whether /if you were interested in camping with her?Whether I will have time to go with her I am not sure.When it means “if(是否)” ，the two words can be used in object clause.Do you know Mickey Mouse will go camping?I can’t say whether/if it is true or not. =Whether it is true or not, I can’t say.when the object clause is advanced, you can just use whether.They discussed whether they should buy the junk food.These verbs, such as discuss，decide, consider and so on are often used “Whether” to introduce clause.Mickey can’t decide whether to accept or refuse Pluto’s idea.You can just use “whether” with the infinitive.In the following, you can just use “whether ”.Also ,the question is whether Donald Duck could accept it. You can just use “whether” with the predicative clause.Whether they accept or refuse is all the same to me. You can just use “whether” with the subject clause.Now,I don’t care about whether or not it will rain.After the preposition, You can just use “whether”.I have no idea whether he is there.Does the Pluto’s go to the shop?As the appositive after the noun， you can just use “whether”.I will go to Mini’s home if she stays at home. Whether she agrees or not，I shall go to Mini’s home.If can introduce the adverbial clause of condition ，it means“如果”; whether can introduce the adverbial clause of concession，it means“不管、无论”。Whether and if can introduce different clauses.Duck asked me if I hadn't made a complete plan.When the object clause of the negative sentence, it usually uses “if”.In the following, you can just use “if ”.exercise1. The question has not been answered _   Taiwan will be included on the Olympic torch relay route.A．that B．whether C．which D．if2. You have not yet answered my question _____ I can join in the party tonight or not.A. whether B. if C. that D. which3．— I’d like to invite you to a party this evening.— Thank you, but __ I’ll be free I m not sure at the moment.A. while B. if C. when D. whether4．---What are you anxious about?---___A. If we succeed B. That we can succeed C. Do we succeed D. Whether we can succeed5. Only when _ the painting _____ decide ______the painting is worth buying.A. he sees, he can ,whether B. does he see, can he, if C. he sees, can he ,whether D. sees he, he can, thatABDDC6. __ English is his favorite subject.A. I asked him if B. I asked him that whether C. I asked him that D. I asked him which7. _____ they’ll go to the Summer Place ____ the weather.A. If; depends on B. Whether; depends upon C. Whether; depended on D. If; depended upon8.It isn’t quite _____ ______ he will be present at the meeting.A. sure; whether B. sure; if C. certain; whether D. certain; that9. _____ the 2008 Olympic will be held in Beijing is not known yet.A. Whether B. If C. Whenever D. That10. No one was sure _____ he would be asked to speak next year.A. when B. whether C. what D. how11. It is still a question to us all _ there is any living thing in some other places in the space.A. whether B. which C. what D. whereBCABAA12. I doubt _____ he will come here on time.A. that B. whether C. when D. where13. The point is not who said the words, _____ they are true or not.A. but whether B. and whether C. but how D. and how14. “What did he ask you?” “__ I would be late.”A. That B. When C. Where D. Whether15. He treated all the people around him, _____he knew or he didn't know,______.A. if, friendly B. whether, friendly C. if, in a friendly way D. whether, in a friendly way16. At the meeting, we discussed _____ we should employ more workers.A. if B. whether C. that D.不填BADBD17. I don’t care ____he doesn’t show up.BA. Whether B. if c. that D. whichThank you for listening!