Using Lots of

In spoken English we often use lots of or a lot of. In written English, it is more common to write many (for countable plural nouns) or a great deal of (for uncountable nouns) in positive statements.A common mistake is to use lot of. For example, "There are lot of accidents on this road". To avoid making this mistake, remember either to use a before lot, or to make lot plural – lots.
We can say either a lot of or lots of before a noun. For example, "There are a lot of people here" or "There are lots of people here". There isn't any difference between the two expressions.
We can also use a lot as an adverb to say how much you do something. For example, "She talks a lot".
A lot is also used in short answers. For example, "Do you like swimming?", "Yes, a lot."