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4. ________ that is true, what should we do? whether If 5. ________ they will ever bee future Olympic champions, only time will tell. Whether 其次要注意時態(tài)變化: 1. 若主句是一般現(xiàn)在時,從句用任何所需時態(tài)。 如: He wants to know if/whether they had a good journey home. 他想知道他們回家旅途是否愉快。 2. 若主句是一般過去時,從句則用跟過去相關(guān)的時態(tài)。即一般現(xiàn)在時變?yōu)橐话氵^去時、現(xiàn)在進(jìn)行時變?yōu)檫^去進(jìn)行時、一般將來時為過去將來時、現(xiàn)在完成時態(tài)變?yōu)檫^去完成時。如: Did the train leave? She didn’t know. →She didn’t know if / whether the train had left. Complete the sentences. whether/if we can grow plants if/whether many people are going to move whether or not he does whether I hurt her feelings 1. 我們不知道我們能否在火星上種植植物。 We are wondering ______________________on Mars. 2. 你能告訴我是不是有許多人打算搬到火星上去嗎? Could you tell me _________________________________ to Mars? 3. 我不知道他在家洗不洗衣服。 I don39。t know ____________________ any washing. 4. 我擔(dān)心是否傷害了她的感情。 I was worried about _________________________. 1. The radio says it _________ cloudy tomorrow. (be) 2. The headmaster hopes everything ______ well. (go) 3. Tom says that they ______________ (play) basketball at six o’clock yesterday evening. 4. I hear they ______________ (return) it already. 5. He said that they ___________ members of the Party since 1948. (be) 6. He asked what they _____________ at eight last night. (do) 7. The teacher told his class that light _______ faster than sound. (travel) 8. I think you ____