①She was seen to dance by them.②She has that is told to you by Tom?③She is often heard to sing this pop song.被动语态中,这里为什么动词的过去分词后有to?由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果

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①Shewasseentodancebythem.②ShehasthatistoldtoyoubyTom?③Sheisoftenheardtosingthispopsong.被动语态中,这里为什么动词

①She was seen to dance by them.②She has that is told to you by Tom?③She is often heard to sing this pop song.被动语态中,这里为什么动词的过去分词后有to?由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果
①She was seen to dance by them.
②She has that is told to you by Tom?
③She is often heard to sing this pop song.
被动语态中,这里为什么动词的过去分词后有to?
由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果可以,希望能够稍微帮我理一下这个比较难的知识点.

①She was seen to dance by them.②She has that is told to you by Tom?③She is often heard to sing this pop song.被动语态中,这里为什么动词的过去分词后有to?由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果
被动语态的句型
肯定句：主语+be +过去分词+（by～）.
否定句：主语+be not +过去分词+（by～）.
一般疑问句：Be +主语+过去分词+（by～
特殊疑问句：疑问词+be +主语+过去分词+（by～
被动语态白表示某事被做,例如we cleaned our classroom everyday变成 Our classroom is cleaned everyday,跟to无关,原来是什么句式就用什么句式
特殊情况：感官动词或使役动词使用省略to的动词不定式,主动语态中不带to ,但变为被动语态时,须加上to .例：make somebody do something→somebody+ be +made to do something see somebody do something→somebody +be +seen to do something

_____that it was going to rain,she hurried homeA seeing B tobe seen C seen D having been seen she was never seen ( ) again.1.late 2.to be late 3.be late选什么? it was clear that she longed ( )her motherAsee B to see C seeing D seen I saw her dancing yesterday.的被动态,应用She was seen dancing...还是to dance? 翻译“She was never seen alive again.” 为什么是 Be seen to do 而非 be saw to do?句子是：She was seen to come here.这是哪方面的语法问题啊? 阅读短文回答问题【初一{下}英语】Dan couldn't find out what was wrong with his cat,Taffy.She wouldn't play any more,and she kept hiding.This went on for days.Then one morning Dan went to his closet to get a shirt.There was Taffy.She was Have you seen Mrs.Brown?选择Have you seen Mrs.Brown?She was seen ___ the guests at the gate .Now she may be in the kitchen.a.to be greetingb.to greetc.greetingd.greet she shi ben dan?da ben dan! It was clear that she longed _ her mother.A.to see B.seeing C.see D.seen He was seen to cross the street. She was seen _______ away from the scene of the crime.She was seen _______(run) away from the scene of the crime.答案给的是running 不应该是be seen to do 所以答案不应该是to run 正如答案所说能填 to run .如果填to run She was seen _______ away from the scene of the crime.She was seen _______(run) away from the scene of the crime.答案给的是running 不应该是be seen to do 吗?所以答案不应该是to run 吗?正如答案所说能填 to run 。如果填to ①She was seen to dance by them.②She has that is told to you by Tom?③She is often heard to sing this pop song.被动语态中,这里为什么动词的过去分词后有to?由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果 She was seen to go into the supermarket by me a moment ago.改为主动.I___ ___ ___ in to thesupermarket a moment ago. he was seen to hang out.为什么要to He was seen to go into the room 这里为什么SEEN后加TO (seen)to entered the room ,he was asked to the policeman.为什么不是having been seen?