本文目录
could you tell me +疑问词的形式？
Could you tell me how I can get to the Zoo?
你能告诉我怎样到达动物园吗？
= Could you tell me how to get to the zoo?
Could you tell me what they are talking
你能告诉我他们正在谈论什么吗？
Could you tell me When the meeting will begin?
你能告诉我会议什么时候开始吗？
when的用法四种句型？
when的用法小结如下:
一、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.
二、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.
三、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.
四、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.
六、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.
七、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.
八、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.
九、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.
十、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.
when后面加todo是什么意思？
完全两码事when to do其实就是不定式前面加连接代词或连接副词Can you tell me when to start tomorrow?when doing现在分词作时间状语，when可省略。When working on the farm, I learnt a lot.
tell的用法有什么？
告诉，告知；说，讲
No one had told them about the drug’s side effects. 没人告诉过他们这种药品的副作用。
Tell me your phone number again. 再给我说一遍你的电话号码。
She told us some funny stories about her sister. 她给我们说了一些有关她妹妹的趣事。
Tell me straight, Adam. Just answer yes or no. 你跟我直说吧，亚当。你只要回答是或不是。
显示；提示；说明
The light tells you when the machine is ready. 机器就绪后提示灯会亮。
What do these fossils tell us about climate change? 这些化石告诉我们哪些气候变化信息？
命令，吩咐；给…下命令
The teacher told the children to sit down quietly. 老师叫孩子们安安静静地坐下。
Stop trying to tell me what to do all the time. 别老是对我指手画脚的。
知道；看出；认出
She might have been lying. Benjy couldn’t tell. 也许她是在撒谎，本吉也说不清楚。
You could tell a mile off that he was lying. 一看就知道他是在撒谎。
.识别，辨别，分辨
How can you tell a fake Vuitton handbag from the real thing? 你怎么辨别路易威登手袋的真假？
.提醒自己某事，告诉自己某事
I keep telling myself there is nothing I could have done to save him. 我不断告诉自己，我当时实在是没有办法救他。
警告，告诫
I told you it was a waste of time talking to him. 我告诉过你，跟他讲是浪费时间
My mother told me not to trust Robert. 我妈妈叫我不要相信罗伯特。
告诉，告状〔尤为儿语〕
If you hit me, I’ll tell. 你要是打我，我就去告你的状。
〔尤指小孩〕打小报告
an unpopular boy, who was always telling tales on the other children 一个不招人喜欢、总爱打小报告的小男孩
总共，合计
There must have been eight cars in the accident, all told. 这次事故肯定涉及到总共八辆汽车。
产生影响〔尤指有害的影响〕
These late nights are really beginning to tell on him. 这些天熬夜真的开始让他吃不消了。
