「因为」和「所以」

跟上一课是双胞胎。英文也只能留一个。

因为累，所以回家了。

❌ Because I was tired, so I went home.
✅ Because I was tired, I went home.
✅ I was tired, so I went home.

常用三种

I went home because I was tired.          because 放中间
Because I was tired, I went home.         because 放句首
I was tired, so I went home.              so 放中间

because 和 so 二选一。中文的"因为……所以……"在英文里不能双保险。

since / as

正式一点：

Since it's raining, we'll stay.      既然下雨
As he was busy, I called later.      因为他忙

动手

因为没钱，所以没去。

✅ I didn't go because I had no money. ✅ I had no money, so I didn't go.

之所以来，是因为你。

✅ I came because of you.

因为他，我们都迟到了。

✅ We were all late because of him.

because vs because of

because + 句子      because I was tired
because of + 名词   because of the rain

后面跟句子还是一个词，决定用哪个。

小卡片

因为 + 句子    →  because
因为 + 名词    →  because of
所以           →  so
既然           →  since

——下一课：「从来」。