大家還記不記得？
以前課本或是語法書上會說
because of 和 due to 是一樣的意思
所以寫作時可以互相替換
但真的是如此嗎？
1
because (conj.) / because of (prep.)
because 可以說是因果關係句型中最常見的詞了，because 是從屬連接詞，後面要加上一個完整句子。because 加上了 of 之後變成了介詞，後面必須要加上一個名詞或是動名詞，才是正確的。
He did very well on the mid-term exam because he studied hard for it.
他期中考考得很好，因為他很用功地念書。
2
due to (prep.)
due to 是個介詞，後面必須要加上名詞，不可以接完整句子。
(O) His failure was due to his arrogance.
他的失敗是因為他的驕傲。
(X) His failure is due to he is too arrogant.
他的失敗是因為他的驕傲。
3
because of 和 due to 的區別
because of 和 due to 兩個詞雖然在中文可能都會翻成「因為」，詞性也都是介詞，但是其實他們的用法卻是不一樣的，不可以隨便替換，會造成語法錯誤！
because of 前面必須是有一般動詞的完整句子，而 due to 前要有名詞，不能是一般動詞（be 動詞不是一般動詞，be 動詞是系動詞），因為 due to 本質上是用來說明、形容名詞的。
(O) He got sick because of a sudden drop of the temperature.
(X) He got sick due to a sudden drop of the temperature.
因為氣溫驟降，他生病了。
(O) The company’s huge success is due to the team’s hard work.
(X) The company’s huge success is because of the team’s hard work.
這間公司的偉大成功，是因為團隊的努力工作。
4
owing to (prep.)
owing to 和 because of 詞性一樣，都是介詞，且用法一樣，只能用在有一般動詞的完整句子後面。
(O) He fell asleep as soon as he laid down owing to a lack of sleep.
他因為缺乏睡眠，一躺下去就睡著了。
(X) His fatigue is owing to a lack of sleep.
他的疲憊是因為缺乏睡眠。
比較：
(O) His fatigue is due to a lack of sleep.
他的疲憊是因為缺乏睡眠。
5
since (conj.)
since 不只表達原因，裡面還暗藏了「既然」的口氣。
Since you are here, could you help me move this heavy box?
你在這裡，你可以幫我搬這個重箱子嗎?
比較：since (prep.)
since 也很常被拿來當作介詞用，意思是「自從」後面要加上一個過去事件或是時間點。
He has lived in San Francisco since 1987.
他自從1987年就住在舊金山了。
He has been depressed since his wife passed away.
自從他的妻子過世後，他就一直很沮喪。
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