john is often seen (help) the old man with his housework
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john is often seen (help) the old man with his housework
答案:to help
1.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,宾语John和宾补动词help之间为主动关系,且句意强调该动作经常发生(often),所以宾语补足语只能使用不带to的不定式(即动词原形)help,而不能使用现在分词helping.
3.但是该句变为被动后,根据语法规定,应该补回不定式符合to,所以题目的正确答案为:to help.
如果你满意我的答案,敬请点击 ,
1.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,宾语John和宾补动词help之间为主动关系,且句意强调该动作经常发生(often),所以宾语补足语只能使用不带to的不定式(即动词原形)help,而不能使用现在分词helping.
3.但是该句变为被动后,根据语法规定,应该补回不定式符合to,所以题目的正确答案为:to help.
如果你满意我的答案,敬请点击 ,
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