请问call at ,callfor.,call on, call up有什么区别?

Call in 作"请来"、"找来"、"召来"解，"请人来作某种专业的咨询或帮忙"的意思。如：

Your father is ill, you should call in a doctor at once.你父亲病了，应该马上去请个大夫来。

The police have been called in to help make it clear.

已请来了警察帮忙把这件事弄清楚。

Call on和call at的意思一样，都是"拜访""访问"，但call on后接表示人的名词或代词，call at 后接表示地点或场所的词语。试比较：

I called on the Smiths yesterday.

我昨天拜访了史密斯一家人。

I called at the Smith's yesterday.

我昨天去了史密斯家。

I called on the doctor yesterday.

我昨天去拜访了医生。

I called at the doctor's yesterday.

我昨天去了医务室。

另外，call on还可以"号召"，后面往往接动词不定式作宾语补主语。如：

The headmaster called on the students to work harder.校长号召学生们更努力地学习。

Call for 有几个不同的意思：

1．作"要求"、"需要"、"提倡"解。如：

Success calls for hard work.

成功要靠勤奋。

People are calling for the freedom of all slaves.人们要求解放所有奴隶。

The work calls for a lot of time.

这项工作需要大量时间。

2．表示"接（某人）"、"来取（某物）"。如：

I'll call for you at sever this evening.

今晚七点我来接你。

We call for the package at the post office.我们到邮局去取包裹。

3．表示"喊着要人取来"，相当于ask for。如：

The man sat down and called for a glass of beer.

那人坐下来，要了一杯啤酒。

Call up是"打电话"之意，相当于ring up或telephone或phone。 如：

I'll call you up tomorrow.

我明天给你打电话。

另外，call up 还有"回想起"之意。如：

Your letter called up the days when we worked together.你的信使我回想起我们一同工作的日子

call sb , 和 call sb up 有何不同？

当解作「给某人打电话」时 (to telephone *** . or to make a telephone call to *** .)，call somebody 和 call somebody up 基本上没有什么分别。 However

"call somebody up" is North American English if you want to look for difference other than the meaning.

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call *** =打电话/面对面叫某人做某事 call *** up=打电话征召某人面谈正经事 都有打电话的意思

call *** up用途比较正式

call sb：给……打电话 | 给某人打电话

call sb up：打电话，征召

call sb. up：给某人打电话 | 打电话给……

call sb down：责骂

call sb. up: 给某人打电话 | 打电话给……

call sb．names: 辱骂某人

call sb names: 谩骂某人 | 骂人 (不客气的直呼人的名字来冒犯人)

call sb. names: 骂人 | 叫人外号 | 嘲弄、辱骂某人

call sb’s name: 点名

call sb. + name: 称某人为……

另外

moreover|in addition|other|separate|additional|besides|furthermore

另外：in addition | what's more | on the side

另外的：further | another | other

另外地：otherwise

另外,还：again

打电话

to make a telephone call

打电话：call up | ring up | call off

再打电话：call back

打电话给：ring up | phoning | dial n.

打电话者：caller

打电话咨询：Please ring/call/phone/telephone for assistance

另外， 你给我打电话了么？

Otherwise，would you ring me up?

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