very
The Italian word 'molto' is used similarly to the English 'very' and is used to emphasize an adjective, an adverb or another adverb. For example, 'molto bene' (very well), 'molto velocemente' (very quickly), 'molto molto lontano' (very very far). It is also used to indicate a large quantity of something, as in 'molto pane' (a lot of bread).
I like your house a lot.
In this sentence, 'molto' modifies the verb 'piace' to express the degree of likeliness, thus translated as 'a lot'.
He works a lot.
Here, 'molto' is used to intensify the verb 'lavora' (works). So, the sentence states that he works to a great extent or a lot.
I have a lot to do.
In this example, 'molto' is connected with 'da fare' (to do) to express the large amount of things or tasks that the speaker needs to do.