By Present tenses, Indefinite articles

Hi all!I've been giving English conversation lessons to a theology professor for about a year now. He's getting on in the years - a couple years from retirement - and his primary goal has been just to get his spoken English going a little stronger. His mother tongue is French but he's...

Just to clarify about the indefinite article: it's OK to say "stores and restaurants see sharp decline in sales" without the article when using the present tense; in fact it has the ring of a newspaper headline. On the other hand when using the gerund not using the article in this...