________ tomorrow's lessons,I have no time to go out with you.A.Not preparing B.Not prepar C.Not being prepared D.Not having prepared是不是选D

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________ tomorrow's lessons,I have no time to go out with you.A.Not preparing B.Not prepar C.Not being prepared D.Not having prepared是不是选D

________ tomorrow's lessons,I have no time to go out with you.A.Not preparing B.Not prepar C.Not being prepared D.Not having prepared是不是选D
________ tomorrow's lessons,I have no time to go out with you.
A.Not preparing B.Not prepar C.Not being prepared D.Not having prepared
是不是选D

________ tomorrow's lessons,I have no time to go out with you.A.Not preparing B.Not prepar C.Not being prepared D.Not having prepared是不是选D
D

yep

D

是选D

D
现代分词做状语,而且是完成式,相当于Because I haven't prepared ...

现在分词做伴随状语,用现在完成时态的进行时态表动作发生在主句谓语动词的前面