I have a number of books on my shelf.

I saw a couple of birds in the park.

I need a further explanation.

In a way, he is right.

Have a look at this new book.

He is something of a genius.

I want to have a go at playing the piano.

I have a degree of control over the situation.

I can only do one task at a time .

I only need a handful of nuts for the recipe.