关于高中英语非谓语动词的3道选择题!
①()thatshedidn'tdoagoodjob,Idon'tthinkIamablerthanher.
A.TohavesaidB.HavingsaidC.TosaidD.Saying
②.Theglassdoorshavetakentheplaceofthewoodenonesattheentrance()inthenaturallightduringtheday.
A.toletB.lettingC.letD.havelet
③.Wefinshedtheruninlessthanhalfthetime()
A.allowingB.toallowC.allowedD.allows
请解释得详细点、顺便说一下做有关非谓语动词的题究竟需要哪几步.不要随便复制别的地方
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