English~~~Please!!!急

Since只可以用在前面，而because就可以用在前和後

eg. Since I am eight,I need to tidy my room by myself
eg.:Because I am eight,I need to tidy my room by myself
eg.:I need to tidy my room by myself because I am eight
eg.I need to tidy my room by myself since I am eight (wrong)

2007-02-26 19:27:19 補充：
Although and Though是一樣意思Although I am a secondary studut ,I don't know how to caculate 1 1(same)Though I am a secondary studut ,I don't know how to caculate 1 1(same)

佢地都係conjunctions(連接詞)

Since其中一種用法係連接詞
1. (常用於現在完成式present perfect tense或過去完成式past perfect tense)自...以來,從...至今
2. 既然;因為,由於

不過since唔可以好似中文咁"因為....所以...."(since....so....)
用左since唔可以加so

Because 就唔會用於句子開端，即係我地唔會" because...."，
句法會係 ".....because...."
舉例e.g.
錯誤: Because i am hungry, so i eat the apple
正確: I eat the apple because i am hungry

Although同though 用法同意思一樣。
1. 雖然;儘管
2. 然而

Although用於句子開端就係"雖然"既意思。
好似since咁，although 唔會同but一齊用，有although就無but，有but就唔可以有although
e.g.
錯誤: "Although he is lazy, but he can get good results"
正確:"Although he is lazy, he can get good results"

Although 用於第二連接句的開端就有"然而/儘管"既意思，同even if一樣意思。
e.g."He loves her so much, although she is not pretty"

希望你明白啦:)