In the Writing part of the CAE exam, the examiners are going to use The Writing Assessment Scale to mark your writing. This scale is divided in the following subscales: Content, Communicative Achievement, Language and Organisation.
Organisation focuses on the way the candidate puts together the piece of writing, in other words, if it is logical and ordered. One of the criteria is assessing your punctuation therefore it is very important to make sure you know the rules. Always allow yourself time to check your grammar, spelling and punctuation thoroughly. Here is some guidance for usage of ‘however’ and ‘because’ in the sentences.
USE OF HOWEVER
‘However’ is an adverb. We use it to highlight the contrast with the idea in the previous sentence. Also, we can use it to start a new sentence. It is imperative to remember that ‘however’ is followed by the comma:
Rob’s constant arguing irritates some of his colleagues. However, most of the team has just learned to ignore him
If he’d told me about it earlier, I could’ve been free. However, tomorrow I have plans to go away.
Remember: ‘nevertheless’ can be used the similar way to ‘however’, but it is more formal
USE OF BECAUSE
‘Because’ is a conjunction. We use ‘because’ to provide a reason for the situation or event in the main clause. ‘Because’ can also be used to link two clauses. The clause with ‘because’ usually comes after the main clauses.
When ‘because’ comes first, it is followed by a comma.
I overslept because my alarm didn’t go off.
Because the fog was really dense, nobody could be seen.
Remember: it is possible to use the conjunctions ‘as’ and ‘since’ to introduce the reason. Clauses with ‘as’ and ‘since’ often come at the beginning of the sentence.
As it was nearly one o’clock, we decided to break for lunch.