Question

英语问题~~~

请问AS和WHILE有什么区别，一些选择题选项又有AS又有WHILE，我都不知道选哪个好。

请问SEAT和SIT有什么区别，如SIT MYSELF和SEAT MYSELY哪个对？不对的应该怎么改？

Answer 1

while与when以及as之间的区别。

1. 当从句中的谓语动词是持续性的动作时,我们可以用while, when或as。

While / When / As I was walking down the street, I noticed a police car in front of the bank.我顺着马路往前走时,发现银行门前停着一辆警车。

2. 当从句中的谓语动词表示瞬间动作时,不可用while。

He was on the point of leaving when someone knocked at the door. 他正要走,这时有人敲门。

3. 如果谈论两个长动作,最常用的是while。

While John was sitting biting his nails, I was working out a plan to get us home. 约翰坐在那里咬指甲时,我想出了一个回家的办法。

不过, as是可以用来说明两种正在发展或变化的情况的,这时as引导一个持续性的动作,主句中的动作与之同时进行。

As we talked on, he got more and more excited. 我们继续往下谈的时候,他越来越兴奋。

4. 如果表示两个短动作或事件同时发生,最常用的是as或just as,也可用when。

Just as he caught the ball, there was a tearing sound. 当他抓住球的时候,有一种撕裂的声音。

I thought of it just when you opened your mouth. 就在你要说话的时候,我也想到了。

seat
vt.
使...就座
给...装座位, 给(机器等)装底座; 安装, 安置
供以座位; 可容纳
使就职; 使得席位
He seated himself at a writing table.
他在写字台前坐下。
Seatthe telescope on the tripod.
把望远镜安到三脚架上。
The hall seats 2000.
这个会场有两千个座位。

sit
v.
(使)就座, (使)坐
通常用sit down

Answer 2

when，while，as引导时间状语从句的区别
when，while，as显然都可以引导时间状语从句，但用法区别非常大。
一、when可以和延续性动词连用，也可以和短暂性动词连用；而while和as只能和延续性动词连用。
① Why do you want a new job when youve got such a good one already？（get为短暂性动词）你已经找到如此好的工作，为何还想再找新的？
②Sorry，I was out when you called me．（call为短暂性动词）对不起，你打电话时我刚好外出了。
③Strike while the iron is hot．（is为延续性动词，表示一种持续的状态）趁热打铁。
④ The students took notes as they listened．（listen为延续性动词）学生们边听课边做笔记。
二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while和as从句的谓语动作必须是和主句谓语动作同时发生。
1．从句动作在主句动作前发生，只用 when。
①When he had finished his homework，he took a short rest．（finished先发生）当他完成作业后，他休息了一会儿。
②When I got to the airport，the guests had left．（got to后发生）当我赶到飞机场时，客人们已经离开了。
2．从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用。
①When ／While ／As we were dancing，a stranger came in．（dance为延续性动词）当我们跳舞时，一位陌生人走了进来。
②When ／While ／As she was making a phonecall，I was writing a letter．（make为延续性动词）当她在打电话时，我正在写信。
3．当主句、从句动作同时进行，从句动作的时间概念淡化，而主要表示主句动作发生的背景或条件时，只能用 as。这时，as常表示“随着……”；“一边……，一边……”之意。
① As the time went on，the weather got worse．（as表示“随着……”之意）
② The atmosphere gets thinner and thinner as the height increases．随着高度的增加，大气越来越稀薄。
③As years go by，China is getting stronger and richer．随着时间一年一年过去，中国变得越来越富强了。
④The little girls sang as they went．小姑娘们一边走，一边唱。
⑤The sad mother sat on the roadside，shouting as she was crying．伤心的妈妈坐在路边，边哭边叫。
4．在将来时从句中，常用when，且从句须用一般时代替将来时。
①You shall borrow the book when I have finished reading it．在我读完这本书后，你可以借阅。
②When the manager comes here for a visit next week，Ill talk with him about this．下周，经理来这参观时，我会和他谈谈此事。
三、when用于表示“一……就……”的句型中（指过去的事情）。
sb．had hardly（＝scarcely） done sth．when．．．＝Hardly ／ Scarcely had sb．done sth．when．．．
①I had hardly ／scarcely closed my eyes when someone knocked at the door．＝Hardly ／ Scarcely had I closed my eyes when someone knocked at the door．我刚一闭上眼，就有人在敲门了。
②I had hardly ／scarcely entered my room when the telephone rang．＝Hardly ／Scarcely had I entered my room when the telephone rang．我刚一走进房门，电话就响了

★seat n.座位
这个词很重要, 考试常考.
have a good seat,这里的seat指place(指地点不错), 而不是chair.
take a seat/take your seat 坐下来, 就坐
下面这个句子在口语、电影里很常见 : Is the seat taken?(这个位置有人吗?)
请坐的3种说法 :
Sit down,please.(命令性)
take your seat,please.
Be seated,please.(更礼貌)
考点 : 作为动词的seat与sit的区别
sit--vi; seat-vt
eg: He is sitting there.他住在那儿.
You seat him.你给他找个位置.
seat sb 让某人就坐,后面会加人
eg: seat yourselft.
Seat him.
〖语法精粹〗
4.When all those present(到场者)_D_ he began his lecture.(重点题)
A.sit B.set C.seated D.were seaed
sit,sit down; seat,be seated;take a seat

Answer 3

问题英文

Answer 4

as和 while都可以引导一些从句，while 有“当……的时候”的意思，也可以起到转折对比的作用。而as可以是“随着”“以……的身份”等意思，不过还要具体问题具体分析
seat myself 是对的
Seat 是座位的意思，也有“就座”的意思
sit只是简单的坐这个动词

Answer 5

seat 一般用被动,BE SEATED
SIT是主动..
AS是正当..的时候,
WHILE也是,不过WHILE一般用现在时