1.He was often seen___with the peasants.答案是B为什么呢

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1.He was often seen___with the peasants.答案是B为什么呢
A.work B.working C.works D.to be worked
2.There used___a post office near my home.答案是D为什么不选B?
A.to being B.to have C.to has D.to be
3.The secretary worked late into the night,___a long speech for the president.
答案是B为什么不选A?
A.to prepare B.preparing C.prepared D.was preparing
4.The water is too cold___.答案是B为什么不选A?
A.to swim B.to swim in C.to swim cross D.for swim

1.see sb.doing sth.看见某人正在做某事这里是指他常常被看见和农民们一起劳动.现在分词表示动作正在进行,表主动.
2.used to 过去常常,选D 与前面There 构成There used to be 表示过去曾有,表存在的有,而have 表所属的有,故不选D,
3.现在分词做原因状语,若去掉横线的逗号可以选A做目的状语.
4.swim 其后的介词不能省 ,to swim in 的宾语是前面的water,像这样宾语可以在前面找到,或者逻辑宾语是句子主语的,就叫做反射不定式,因为宾语存在,就要用介词.
例如：
I feel that zoos provide clean and safe places for endangered animals to live.
LIVE的主语是ANIMALS,也就是只有主语,没有宾语,所以不用加介词了.
动词之后加介词一般都是因为动词不及物,所以加上介词加宾语；如果不及物动词之后没有逻辑宾语,就不用加介词.
再举例：The chair is very comfortable to sit in.（这个椅子坐上去非常舒服）这个句子,也可以说成,To sit in the chair is very comfortable.或者：It is very comfortable to sit in the chair.因为 in的宾语是chair所以要用介词.假如是It is very comfortable to sit.（坐着非常舒服）这里就不用介词了.
因此4不能选A.
祝进步.

1.He was often seen___with the peasants.答案是B为什么呢 1,He was often seen _____with the peasants, A, work B, worki 英语改错题目The peasants here treat us very friendly.这个句子答案是把very He was often listened______in the next room. He was often seen____basketball on the playground Before _______(admit) to the university,he was a farmer.答案是b He was often listened ______ in the next room.A.sing B.sung 英语翻译the boy often makes her( ),but this time he was made( )b he was often heard ()in the next room.A.to sing B.sing 1.He often makes us kites.2The boy was lost.(1)The boy ___ _ 所给答案为什么是A, 而不是B呢?The underlined word “develop” in the passag the peasants were often made to work from morning till night