1.Who knocked at the door so loudly?I don’t know.I don’ t know _ at the door so loudly.2.Do you know else is going to be on duty today?（who,whom）3.I really don't know____ the bridge will be finished.（how long,how soon

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1.Who knocked at the door so loudly?I don’t know.I don’ t know ____ _______ at the door so loudly.2.Do you know ______ else is going to be on duty today?（who,whom）3.I really don't know________ the bridge will be finished.（how long,how soon
1.Who knocked at the door so loudly?I don’t know.
I don’ t know ____ _______ at the door so loudly.
2.Do you know ______ else is going to be on duty today?（who,whom）
3.I really don't know________ the bridge will be finished.（how long,how soon）

1.Who knocked at the door so loudly?I don’t know.I don’ t know ____ _______ at the door so loudly.2.Do you know ______ else is going to be on duty today?（who,whom）3.I really don't know________ the bridge will be finished.（how long,how soon
1 who knocked
2 who
　做从句的主语,所以用who
3 how soon
后面有will,表示将来时,用how soon,问多久
我不知道这桥多久就能修好

1.who knocked，不知道谁在敲门
2.who，空格前没有介词，用who
3.how soon，提问多长时间

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1.I don’ t know who knocked at the door so loudly.宾语从句
2.Do you know who else is going to be on duty today？宾语从句中做主语，whom是宾语
3.I really don't know how soon the bridge will be finished.
how soon还要多久，通常与一般将来时连用
how long 多长时间，通常搭配现在完成时，对for+一段时间提问

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1. who knocked，这里做know的宾语
2. who， who else is going to be on duty today做前面know的宾语。
3. how soon，我不知道还要多久桥才能建成，所以用how soon，原理同上
how long意为“多久、多长时间”，主要是对一段时间进行提问。
How long do you stay in Beijing every year? 每年你在北京住多久？
How long have they lived here? 他们住在这里有多久了？
—How long were you not at school last year? 去年你多久没上学？
—About two weeks. 约两周。
how soon意为“还要多久”，是对从某个基本时间到将来某动作结束或某动作发生这段时间提问，常用在一般将来时态的句子中，其答语通常是“in + 一段时间”。
—How soon can you finish the work? 还要多久你能完成这项工作？
—In half an hour. 半小时后。

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1.Who knocked at the door so loudly? I don’t know.
I don’ t know __who__ __knock_____ at the door so loudly.
2. Do you know __whom____ else is going to be on duty today？（who, whom）
3. I really don't know_____how long___ the bridge will be finished.（how long, how soon）

She went d_____to see who knocked at the door. who was knocking at the door just now?还是who knocked at the door just now? 是knocked at the door还是knocked on the door Mr.White pickde up a stone and knocked the man who insulted his wife right out at the knocked at Who knocked at the door?I thought it was Jack.回Who knocked at the door?I thought it was Jack.回答当中为什么有两个谓语,一个句子的基本结构是一个主词加一动词. knock 短语The little boy run for the football and ___a man standing there.A.knocked down B.knocked at C.knocked into D.knocked the man knocked l_ at the door now. 1.Who knocked at the door so loudly?I don’t know.I don’ t know ____ _______ at the door so loudly.2.Do you know ______ else is going to be on duty today?（who,whom）3.I really don't know________ the bridge will be finished.（how long,how soon 18. He knocked at the door _________ no one answered. I () my brother when someone knocked at the doorI () (telephone)my brother when someone knocked at the door knoced at 和knocked The boy who was knocked by the truck has been sent to the hospital.改写句子 We________________the boy who was knocked by the truck to the hospital. I heard someone ____(knocking/knocked)at the door just now.那用knocked也满足hear加从句呀？请问：The man knocked at the door.the door是宾语吗?这个句子中knocked at the door 是谓语,还是knocked at 是谓语,the door 做宾语 The boy ___ the ball and ____ a man.A.run to,knocked into B.ran to,knocked upon C.ran for ,knocked into D.ran for,knocked at选哪个?为什么?请翻译. The last man stayed at his house,a person knocked at his door.有什么深意 Is there( ) at home?he knocked at the door and asked.