Betty is often seen (to help) the old man with his housework.
贝蒂经常被人看见帮这位老人做家务.
see sb do,看见某人做某事.变成被动语态就是be seen to do,被人看见做某事.所以这里要填不定式.
Betty is often seen___(help)the old man with his housework.
Betty is often seen___(help)the old man with his housework.
答案为什么是to help啊?helping行不行?
答案为什么是to help啊?helping行不行?
英语人气：134 ℃时间：2019-09-16 20:51:55
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