French language Q&A Forum

I was seeking an answer to the same question posed by White below. It can quite easily be included in a lesson for the sake of completion. Some examples of "exceptions" would be welcome. 

I'm a little confused at the distinction between "beacoup de" and "de nombreux". I used "beacoup de" in an answer and got it wrong, but I believe it was grammatically correct. The answers in the Q&A help a little, but I think it would also help to have this mentioned in the lesson text.

Shouldn’t the adjective be plural to match the noun?

Could someone explain the use of the definite article "les" before "deux tiers" in the following example from this lesson:

Les invités ont mangé les deux tiers du gâteau.  The guests have eaten 2/3 of the cake.

Thank you.

Hi Ted I want to say I have a sore throat in French 

During the dictation, I have noticed that before I can give myself a grade, 1 thru 5, the bar goes to the next sentence thereby it seems as though I did not respond to the question, which deminishes my score

Salut, s'il vous plaît j'ai une question concernant les liaisons

Dans cette phrase "Je vais avec lui" 

On fait la liaison entre vais et avec ? 

Svp répondre ma question en anglais merci