Both, Neither, Either

Use:

1) Both
Both means two of two things.
I have two cats. I like both of them.

2) Neither
Neither means not one or the other of two things.
Neither of my cats is grey.
Remember to use a singular verb after neither.
Neither of the dogs are dangerous. => Neither of the dogs is dangerous.

3) Either
Either means one or the other.
There are two cakes. Please have one. You can have either one.

Much, many, a lot of

Much, many, a lot:

"Much", "many", and "a lot of" indicate a large quantity of something, for example "I have a lot of friends " means I have a large quantity of friends.
Much, many, and a lot are quantifiers.

Study the examples below:

How much money have you got?	I haven't got much money.
	I have got a lot.
	I have got a lot of money.
How many students are in the classroom?	There aren't many.
	There are a lot.
	There are a lot of/lots of students.

Present perfect simple or continuous?

Often there is very little difference between the present perfect simple and the present perfect continuous. In many cases, both are equally acceptable.

They've been working here for a long time but Andy has worked here for even longer.

I've lived here for 10 years and she has been living here for 12 years.

To emphasize the action, we use the continuous form.

We've been working really hard for a couple of months.

She's been having a hard time.

To emphasize the result of the action, we use the simple form.

I've made fifteen phone calls this morning.

He's written a very good report.