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need D. May。 can B. May。 Could D. shall。 Would B. may。t. 不行。 . ?— May I ask you a question? 我可以問(wèn)你一個(gè)問(wèn)題嗎? — Yes, please. 可以,請(qǐng)問(wèn)。 ?— Could I hand in our homework later, Mr Lin? 林老師,我可以稍后交作業(yè)嗎? — No, you can’ t. 不,不行。在口語(yǔ)中, could常用來(lái)代替 can向?qū)Ψ礁竦靥岢稣?qǐng)求,用法上比 can正式,可以用于向老師或長(zhǎng)輩提出請(qǐng)求,這時(shí) could不表示過(guò)去,回答一般還是用 can。 ?— Can I have some milk, Mum? 媽媽,我可以喝點(diǎn)牛奶嗎? — Yes, you can. 好的。Unit 7 Abilities Grammar1 It ____ride a bike now , But it ______ ride a bike last year. Task 1. To talk about abilities . Step 1. Free talk can couldn’t She ______ row a boat. But she ________ row a boat in 2022. can couldn’t ride a bike Now the girl can... but she couldn’t ... 2 years ago . play badminton Now ...can... ...could not/couldn’t... in the past. swim Now ...can... ...could not/couldn’t ...last mon