how to use so and such？

so有兩種用法.

1. 第一種用法係用so來做連接詞,去講一樣野的前因後果.so的意思同therefore一樣,但用法同therefore有d唔同.
(不過用therefore果時,你要注意兩樣野.第一,你要係一個句子的開頭用,第二, 係用咗therefore之後要加comma!!!)
e.g. It is too late, so I took a taxi.
It is too late. Therefore, I took a taxi.

2. 第二種用法係用so來做引述,去引述一樣野的的程度或範圍.
e.g. You are so beautiful.
This mouse is so cute.

3. such一樣可以用來做引述, 去引述一樣野的的程度.(唔可以用來引述範圍--->so同such的difference!!!)
e.g. It was such an exciting game.

2007-07-20 01:29:53 補充：
我想講一樣野!!!!!!!!!我上面果個人講用such果時,話such可以係當such as咁用,咁係錯ga!!!!!!!!!!!!!such as唔等於such.嚴格地講,such的用法只可以用來引述一樣野的的程度(我上面有講到~)而such as根本係另外一回野,such as的用法係用來引述一d examples.e.g. I love many colors such as purple,red,orange,blue and yellow.

2007-07-20 01:43:18 補充：
我又想講多一樣野la!!!!!!!!!waihingcynthia(我上面果個人)講用so果時,話so可以係當so what咁用,咁係錯ga!!!!!!!!!!!!!so係連接詞的一種,而so what只係一種phrasal noun(waihingcynthia所講的習慣用語), 兩者在文法到上根本係兩樣唔同的野,所以她的講述一d都唔成立--->係錯ge!!!!!!好心你就唔好教壞d細路la~教d錯ge grammar俾人知,俾人笑之餘,仲連累人地學錯grammar!!!!!!

其實好明顯根本就係最佳解答個位人兄有問題
人地都冇講過such as等於such
真係唔知佢係點理解野

so what都只不過係口語既講法
好多口語都係唔岩英文文法
發問者又冇講明話一定要問關於寫作既英文
所以根本就係佢o係度冇野搵野話人
都唔知點解佢會係最佳解答

so is :
1. 這麼,那麼;【口】多麼,非常
I'm so pleased to see you.
看到你我真高興。
2. 就那樣,像這樣;如此
Hold the fork so.
要這樣拿叉子。
3. (so後用倒裝結構)也如此,也一樣
I was tired, and so were the others.
我累了,其他人也一樣。
I like dancing; so does my wife.
我喜歡跳舞,我太太也喜歡。
4. (so置於句首)確是如此,正是那樣
5. 因此,所以
He is sturdy and so fit for the job.
他很健壯,所以適合擔任這個工作。
6. 如此看來
So you'll quit school?
這麼說你要退學了?
conj.
1. 因此,所以
The manager was ill so I went in her place.
經理病了所以我代她去。
2. 因而,從而
Mom told him to go to bed early so he could get up early the next morning.
媽媽叫他早點上床睡覺,第二天早上好早點起床。
int.
1. (表示驚訝等)啊,哦
So! You've kept me in the dark all the time.
哦!原來你一直把我蒙在鼓裡。
2. (表示同意等)好,行
a.
1. 事實如此的;真的

such is :
1. 這樣的,此類的
She has bought paper, pens, and other such stationery.
她買了紙,筆以及諸如此類的文具。
Such accidents should not happen again.
不可以再發生這種事故了。
2. (與that連用)如此的...(以致)
He is such a good teacher that all his pupils like him.
他是位極好的老師,所有的學生都喜歡他。
3. (表示驚歎或加強語氣)這樣的,這等的
It was such an exciting game.
那場比賽真是精彩刺激。
4. 上述的
pron.
1. 這樣的人(或事物);上述的人(或事物)[M]
Such were her words.
她就是這麼說的。
Such is their decision.
他們的決定就是這樣。

http://hk.dictionary.yahoo.com/search.html?q=1&s=such

這 2 字分別很大。
1) So --- 用作副詞 adverb 時解作到這程度、這麽、那麽、很、也。
例句：Yesterday I saw Peter. He was so fat.
當加上 not 時解作 --- 不 (像) ...那麼....
例句：I haven't enjoyed myself so much for a long time.
(意思是我巳很久沒有這樣享受快樂了)
例句：He is fat and so am I . (意思是他肥我也肥)
請留意這句的文法用法, 很特別。

2) So --- 用作連接詞時解作所以、因此、表示結果或目的。
例句：It is raining so I stay at home.

3) So --- 有一習慣用語 So what ? 表示不在乎。
例句：She is more beautiful than me . So what ?
(意思是她比我美, 但我不在乎。)

4) Such --- 可用作代名訶, 解作這樣的、那樣的和某類人或事。
請注意用法。
例句：He explained his work . Such information is very important.
例句：Football is exciting . Such is my opinion only.
例句：He is a good leader who has been regarded as such by her friends.
5) Such --- 有一習慣用語, Such as 解作「像﹜。
例句：Natural food such as wild mushroom is becoming rare.
(意思是天然食物好像野生磨菇越來越少)

so 後跟adj~~~e.g. you are so beautiful
such後跟 a/an + noun~~~e.g. you are such a beautiful guy

我諗你主要係想問e 種用法

such is used before object and so is used before an adjective