(1)表示从过去某一时间来看将要发生的动作或存在的状态，常用在宾语从句中，由“would+动词原形”构成。
He asked when the meeting would start.他问会议什么时候开始。
(2)用“was/were going to+动词原形”所表示的过去将来时表示曾经打算或准备要做的动作。
He was going to start a new job when l saw him then.那时我见到他时，他正打算开始新的工作。
（3）go，come，leave，arrive，start等动词，其过去进行时表示按照计划即将发生的动词。如： He said he was coming this evening. 他说他今天晚上要来。 一.被动语态的构成及其用法 （一）被动语态的构成
1.被动语态的基本构成：be+动词的过去分词
2.各种时态的主动，被动语态结构（以动词do为例）列表如下 时态 一般现在时 主动语态 do/does 被动语态 am/is/ are+done 主动语态 We clean the classroom. 被动语态 The classroom is cleaned us. by 一般过去时 did was/were+done He made The kite was made by him. the kite. 现在进行时 am/is/are+ doing am/is/areShe is Flowers are being by + being done watering flowers. watered her. 现在完成时 have/has+done have/has+ been done Jim has The work been finished the has work. finished by him. 一般将来时 will/shall/be to+do will/shalThey will Trees will going l/be going to plant trees be planted by +be done tomorrow. them tomorrow. 过去进行时 was/were+ doing was/were+ being done She writing was A letter being by a was letter this written time yesterday. 过去完成时 had+ done had+ been done Jim had her this time yesterday. The work been finished the had work. finished by Jim. 过去将来时 ( would/ should/be was, Would//shHe said he He said a ould/be(was,would make a kite would be kite. made by him. were) were)going going to+do to +be done 还有情态动词
（二）被动语态的用法
被动语态中主语是动作的承受者，主要用于下列几种情况 1．不知道动作的执行者是谁。 The window was broken yesterday. 窗户昨天被打坏了。
2．没有必要指出动作的执行者是谁。
Many tall buildings are built in our city every year. 每年在我们的城市中会修建许多高楼。 3．需要强调或突出动作的承受者。 English is taught in our school. 我们学校教授英语。 4．动作的发出者不是人。
Most of the houses were destroyed in the earthquake.
can/may/must+do can/may/mI can find He can be found by me. ust+be done him. 在地震中许多房屋被破坏。 二.主动语态和被动语态的转换 (一)主动语态变被动语态
1．要将主动句里的宾语成分变为被动句中的主语成分，若主动句中的宾语是人称代词，要将宾格变为主格。
2．把主动句中的主语变为被动句中的宾语，主格变为宾格，并由by引导。
3．谓语动词变成相应的被动形式。
We asked him to sing an English song.我们要他唱一首英语歌曲。
He was asked to sing an English song by us.他被我们要求唱一首英语歌曲。
(二)带双宾语的谓语动词变被动语态
谓语动词带双宾语时，既可以将间接宾语转化成主语，也可直接宾语转化成主语。若将间接宾语转化成主语，则保留直接宾语；若将直接宾语转化为主语则保留间接宾语，且在被保留的间接宾语前加上介词to或for。
I was given a book.（间接宾语me改为主语）
A book was given to me.（直接宾语a book改为主语） (三)短语动词变为被动语态
许多由不及物动词构成的短语动词，相当于及物动词，可以育宾语，也可以有被动语态。注意：短语动词是一个不可分割的
蔓体，在变为被动语态时，不可丢掉构成短语动词的介词或副词。 We should take good care of the children.我们应该照料好孩子们。（变为被动语态）
The children should be taken good care of.孩子们应该被照料好。（of不可省略）
(四)带复合宾语的动词变为被动语态
宾语加上宾语补足语一起构成复合宾语。变被动语态时，只把宾语变为被动句的主语，宾语补足语保留在原处，成为主语补足语。
I saw some boys playing football on the playground.我看到一些男孩在操场上踢足球。（变为被动语态）
Some boys were seen playing football on the playground.一些男孩被看见在操场上踢足球。 (五)被动语态后动词形式的选择
主动句中的感官动词see，hear，watch，feel，notice等以及使役动词let，make，have等，动词后跟省略to的不定式．变为被动句时，应加上不定式符号to。
The boss made the workers work twelve hours a day.那个老板迫使工人们每天工作12小时。（变为被动语态） The workers were made to work twelve hours a day by the boss.工人们被老板强迫每天工作12小时。
We often hear the girl sing in her room in the evening.
我们经常听到那个女孩晚上在她的房间唱歌。（变为被动语态） The girl is often heard to sing in her room in the evcning.那个女孩晚上经常被听到在她的房间唱歌。 一、 动词的时态
1. have/has been to,have/has gone to和have/has been in 三种结构的区别
Jim has gone to London with his family. 吉姆已和他的家人去了伦敦。 Have you been to Beijing before？ 你以前去过北京吗？
The greens have been in chine for two years. 格林一家已在中国两年了。