Grammar question about articles.
Usage of articles with conjunctions “and” and “or”.
I am pondering over the usage of articles with conjunctions. As far as I know, if the things we are talking about are two different things, use separate articles before each word/noun. For instance:
Mr. Cook bought us a cup of tea and a cup of coffee.
On the other hand, if these two things are a part of something, use only one article before the two words/nouns. Also, it takes singular verb (subject and verb agreement.)
A horse and his hair is long.
I find it difficult when to use only one article before and when to use two articles.
A username and password is required in order to log in to the website.
A username and a password are required in order to log in to the website.
Similarly, with “or”
Is it a good or a bad thing VS Is it a good or bad thing.
Anyone know how to use articles in these cases? Are there any websites that can help me understand the usage?
This question is in the General Section. Responses must be helpful and on-topic.