一、when的句子四年级？
1、When do you go to school? 你什么时候去上学?
2、When do you usually exercise?你通常什么时候运动?
3、When do you do your homework? 你什么时候做家庭作业？
4、when do you get up in the morning.
你早上几点起床？
5、It was raining hard when we arrived. 我们到达时正下着大 雨。
二、when的用法四种句型？
①
When用作疑问副词,引导特殊疑问句.
When用作连接副词,通常用来引导主语从句、表语从句、同位语从句、宾语从句及起名词作用的“ when ＋动词不定式”结构.
When用作关系副词,引导限定性定语从句和非限定性定语从句.
When用作从属连词,意为“当……的时候”,引导时间状语从句
注意：如果 when 引导的从句中的主语和主句中的主语一致,且从句中的谓语动词是“ be ＋分词”或从句主语是 it ,则 be 动词及其主语常可省略.
When用作并列连词,意为“在那时,届时”,表示时间.这时主句中可以用过去进行时,过去完成时或“ was/were about to do sth.”结构.
when作为代词常常位于介词之后,意为“那时,什么时候”.
另外,when 还可用作名词,前面常常用定冠词 the .the when 表示事件发生的时间,常常与 the where,the how 并列使用.
②
when的用法小结如下:
1、when 意为“当…时”,用作连词,引导时间状语从句,从句的谓语动词可以是延续的（此时相当于while）,也可以是非延续性的.引导的时间状语从句通常用现在时表将来.
I will write to my sister when I have finished the book.我读完这本书后便给姐姐写信.
When he sees the photo,he can't help thinking of his childhood.
每当看到这张照片,他就不禁想起童年.
2、when 引导时间状语时,若主从句主语一致或从句主语为it且从句谓语动词含be的形式,可省略从句的主语及be 部分.
When (I was) walking on the street,I came across Mary.我在街上漫步时遇上了玛丽.
He gave good practical advice when (he was) asked.他有求必应,给出了好的可行性建议.
3、when用作连词,表突然发生某事,意为“就在这时/那时”（=at this/that time）,常构成句型 be doing… when… 或be about to do…/be on the point of doing… when….
I was just coming along to see you when I ran into Tom.遇见汤姆时,我正在来看你的路上.
He was about to go to bed when the telephone rang.他准备睡觉时电话铃响了.
4、When用作连词表过早发生某事,意为“还没（刚刚）…就”,可构成句型 hardly/scarcely…when….使用该句型时应注意两点：① 主句的谓语动词用过去完成时,从句谓语动词用过去时.② 若hardly/scarcely 位于句首时,其后的句子部分倒装,而when引导的从句不倒装.
I had been there little more than a week when I set to work in earnest.
我在那还不到一个星期就开始认真工作.
Hardly had I opened the door when he hit me.我一打开门他就撞了我.
6、when引导条件状语从句,意为“在…情况下；如果；要是”,相当if.
Why do you walk when you have a car?你有车为什么还走路呢?
No one can make a dress when they haven't learnt.没有人能够不学就能制作衣服的.
7、when 引导时间状语从句,意为“一…就 …”,相当于 as soon as .
We will start when everything is ready.一切准备好了我们就出发.
When she comes,I will give it to her.她来了我就给她.
8、when可引导原因状语从句,意为“既然；考虑到…”,相当于since,as 或now that.
You can't go home when you haven't finished your work.
既然你没完成工作,你就不可以回家.
9、when可引导名词性从句或接不定式.
Could you tell me when you will leave for Shanghai?能告诉我你什么时候去上海吗?
Ask him when to open it.告诉他什么时候打开.
10、when作关系副词,引导定语从句,在从句中充当时间状语.
At the time when I saw him,he was very well.我见到他时他很好.
Sunday is a holiday,when people do not go to work.星期天是一个假日,这天人们不用去上班.
三、以when开头的句型有哪些？
When do you usually get up 你通常几点起床?
When does your father usually go to work 你父亲通常什么时候去上班?
When she'll be back depends much on the weather.她何时回来在很大程度上取决于天气.,/;
When （we are ） young， we are full of hope. 年轻时，我们大家总是充满希望。
When in Rome， do as Romans do. 入乡随俗。
When will they come back？
when did that happen?
when did you graduate from school?
when are you leaving for Shanghai ?
when will you be free?
when did you have your breakfast this morning ?
when are you going to go to work?
when did you learn to drive a car ?
when i was a child ,i often play the violin.
when will you come to my home?
when will you be with me ?
答:以when 开头的句型有:特殊疑问句、主语从句、宾语从句、表语从句。