有關since的用法(網路上的我都看不懂)十點!!!

1.句子配合since參考時間點，需用現在完成式，以符文法
2.since可當連接詞和介詞：

連接詞：We have had many habits since we were children.

介詞：
We have had many habits since childhood.

We have had many habits since being children.(動名詞片語).
3.當我使用電腦時，我會忘記時間」
現在習慣:When I use the computer, I always lose track of the time.


過去習慣:When I used the computer, I lost track of the time.

We have had many habits since we were children.

We have acquired many habits since we were little.
要寫成這樣才周全。

When I use a computer, I often lose the track of time.
要用現在簡單式動詞，表示我一直都是如此。
如果用了過去簡單式動詞，則表示現在已經不是這樣了。

since的是意思是"從____(什麼時候)開始我們就已經______(做了什麼)"，這裡注意是"已經"，所以只能用於完成式(have/has+Vp.p)。

「從小到大，我們都有許多習慣」要翻成 We have many habits when we were children.

如果要用到 since就必須把中文改成【從小到大，我們已經有許多習慣】，然後英 文就會是"We have had many habits since we was children."


這樣看的懂嗎??