Open Menu
Section of English Grammar

Try mSpy Phone Tracker for Your Kid's Safety

Touch a word or the <play> button for sound
Click on a word or on the <play> button for sound
Click on a word or on the red <play> button for sound


- Because / Cause

- Because of

- As / Since

- That's why



How to express reason
created by users
How to express reason
Level: Level: Easy

How to express reason


      I was worried because Tally was late

In conversation we very often use the form 'CAUSE (also spelled: coz, cos or cuz, cus in American English)
      I left cause I was getting bored

BECAUSE  OF+ noun (p)

This is a preposition, so it is not followed by a clause with a verb, it is followed by a noun or noun phrase

      She was late because of the traffic
      I was tired because of all the hard work
AS / SINCE (c)

These conjunctions are formal. In a less formal language we prefer the equivalent with SO:

     As it's raining again, we'll have to stay at home (= It was raining again, so we had to stay at home)
     Since it's too late, I think we should stop now  (= it was too late, so I think we should stop)
They're used when the reason is already well known, or it is less important than the rest of the sentence.  These clauses often begin the sentence:
      Since I speak no German, we had to communicate in English
      Since it's too late, we should leave it for tomorrow
      It's very noisy here, since we live close to a motorway


- Sorry, I must go because I have a meeting at 5  (I'm giving you new information)
- Since today is Sunday, let's stay at home and rest  (we both know that today is Sunday)


This relative clause is very commonly used to express reason (especially in its short version)
     My car's broken, that's the reason why I came walking
     I didn’t know she was your sister, that’s why I didn't talk to her
     You speak very good English. Oh yes, I forgot your mother's English. That's why


abbreviations:  (c.)= conjunction  (p.)= preposition    (see the important difference here: Kinds of Connectors)


For Spanish Speakers

BECAUSE (c) = porque...
BECAUSE  OF + noun (p) = por
THAT'S (THE REASON) WHY (c) = por eso ...
AS / SINCE (c) = como   (when subordinate comes first)  ya que   (when subordinate comes second)
As I speak no German, I had to communicate in English
- Como no hablo alemán, nos tuvimos que comunicar en inglés
- Nos tuvimos que comunicar en inglés, ya que no hablo alemán

© Angel Castaño 2008 Salamanca / Poole - free videos to learn real English online || InfoPrivacyTerms of useContactAbout
This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read more