例: She was sick, so she didn’t go to school today.（她生病，所以今天沒有去上學）
1. because 與so這兩個連接詞，都用在「因果關係」的句子上，因此同樣意思的句子，可以分別用because與so表示。
2. Because 可至於字首或句中，至於句首須大寫，句子分開需用,隔開。句中則使用because 直接連接子句。
Because 原因, 結果句.= 結果句+ because +原因句.
Because I didn’t prepare for the test well, I failed the test.
= I failed the test because I didn’t prepare for the test well.
= I didn’t prepare for the test well, so I failed the test.
例（正）I didn't do my homework, so my teacher was angry.（我沒做作業，所以老師很生氣。）
（正）Because I didn't do my homework, my teacher was angry.
（誤）Because I didn't do my homework, so my teacher was angry.
She ran to school because she was late.＝ Because she was late, she ran to school.
so引導表「結果」的子句，一般放句中，且須以逗號與前面句子隔開。She was late, so she ran to school.（她遲到了，所以她跑去學校。）
4. Because of N
Because of the rain, we can’t go camping today.
on account of + N/V-ing 為了；由於
by virtue of
1.On account of the typhoon, the baseball was put off. 由於颱風的關係，棒球比賽延期了。
=The baseball was put of on account of the typhoon.
2.Due to the accident, the superstar couldn't show up.