john is often seen (help) the old man with his housework

john is often seen (help) the old man with his housework
英语人气:745 ℃时间:2019-08-19 01:38:27
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答案:to help1.此句为被动语态,还原成主动句为:Sombody often sees John ____ the old man with his housework.此句含有“感官动词see + 宾语John + 宾语补足语”结构,且宾语补足语为help的非谓语形式.2.很明显,宾...
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