Ifwhether均可译为是否”引导宾语从句时常可互换口.pptVIP

If , whether 均可译为“是否”，引导宾语从句时常可互换。口语中常用if代替whether 下列情况只能用whether 1 与 or not 连用时只用whether （１）“whether…or” 意为“是…还是” Could you tell me whether that’s a fast train or not?(P24,L20) 翻译:我问他它是真的还 是假的。 I asked him whether it was true or not. （２） “whether…or” 意为 “ 不管/无论…还是”,引导让步状语从句。　 Hainan Island is the place to be, whether it’s summer or winter.（P22,L18) Whether you _______(like) it or not, you’ll have to do it. 2. Whether能与不定式连用. We haven’t decided whether to start right now. ３。Whether能引导介词后的宾语从句。 I’m thinking about whether I should go swimming. ４。 Whether能引导主语、表语、同位语和让步状语从句。　 Whether he is right or wrong is still a question.(主语从句） The question is whether he can come on time.（表语从句） 注意：１.分清if从句是 宾语从句还是条件状从句。在宾语从句中，意为“是否”，将来时仍用将来时态；在条件状语从句中意为“如果”，要用一般现在时表示将来。 ２。引导否定的宾语从句，一般用if，不用whether. Exercises: 1.I don’t know if he ____________(come) tomorrow. If he _________(come), I’ll ring you up. 2. He doesn’t know _________ to stay or not. A. whether B. if C. either D. if he will 3.I don’t know _____ or not our teacher will come here;_____ he comes, I’ll let you know. if;whether B. whether;if C. whether;whether D. if;if * 引导让步状语从句， 用一般现在时表将来。 like 你必须做这件事，不管你喜欢不喜欢。 He asks me if I didn’t finish my homework. will come comes A.whether B *