because

We didn’t enjoy the day because the weather was so awful..那天我们很不尽兴，因为天气实在太糟。

‘Why can’t I go?’ ‘Because you’re not old enough.’.“我为什么不能去？”“因为你年纪太小。”

Hubert never experienced any fear, and this was partly because he was not particularly intelligent..休伯特从来都没有害怕的感觉，部分原因是他这人不大聪明。

Many exam candidates lose marks simply because they do not read the questions properly..许多应试者失分只是因为没有好好地读题。

I decided to go with them, mainly because I had nothing better to do..我决定和他们一起去，主要是因为我没有更好的事情可做。

because of,adv. 因为；由于