How to use 'because', 'as' and 'since' - English In A Minute

Hi! I'm Tim from BBC Learning English

and today I'm going to tell you about three useful words:

because, as and since.

These are all used to give reasons.

'Because' is more common than 'as' or 'since'

and we use it when we want to focus on the reason.

I'm tired because I didn't sleep very well.

When we want to give extra focus to the reason,

we can put the 'because' clause

at the beginning of the sentence.

Because my bed is uncomfortable,

I'm getting a bad back.

'As' and 'since' are more formal than 'because'

and we use them to focus on the result

rather than the reason.

I hope Tom's brought that comic

as I wanted to borrow it from him.

Noodles are popular since they're easy to cook.

We often use 'as' and 'since' clauses

at the beginning of the sentence.

Just remember to add a comma.

So, as our minute is up,

I'll finish recording this video.