问题标题:
【高中语法综合练习149.--DidyouseeTom?Hesaidhewouldcomebackforsupperatsixo'clock.---Heseems()withhisfriendsinthelakeA.toswimB.tobeswimmingC.tohaveswumD.swimming】
问题描述:

高中语法综合练习1

49.--DidyouseeTom?Hesaidhewouldcomebackforsupperatsixo'clock.

---Heseems()withhisfriendsinthelake

A.toswimB.tobeswimmingC.tohaveswumD.swimming

蔡成森回答:
  B.因为:seemtobedoingsth表示不定式的动作和主句中seem是同一个时态,比如,Heseemstobedoinghishomework.他好像正在做作业;seemtodo表示不定式的动作发生在主句动词seem之后,比如Itseemstorain.好...
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