It is because is used in the following situations:
To introduce an explanation of cause and effect use It is because:
It is because + cause + ‘that’ + effect.
It is because of + cause (noun or noun phrase) + ‘that’+ effect (clause).
e.g. It is because of your smile that I feel happy.
It is because + cause (clause with a subject and a verb) + ‘that’ + effect (clause).
e.g. It is because you smiled that I feel happy.
To refer back to a cause, then give an effect, use it is because of this:
Cause + ‘and’ + ‘it is because of this that’ + effect
Cause + ‘.’ + ‘It is because of this that’ + effect
To give an effect first, then explain the cause, use this is because:
To answer questions, use it is because, this is because, or because:
In 'if ' and 'when' sentences use it is because:
Use the grammar information above to help you choose the correct word from the drop-down list:
hits since 8 December 2004.
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