Can you add lo (it) to the end of a word if you just want to say 'something it'?

Example:
Mangialo adesso!!

Also, how do you say she likes?
This is how I would like it formatted - Lei ____ piace

Question

Can you add lo (it) to the end of a word if you just want to say 'something it'?

Example: 
Mangialo adesso!!

Also, how do you say she likes? 
This is how I would like it formatted - Lei ____ piace

Answer

No, you can't do that always. Only when you use a transitive verb. For instance, you can "mangialo adesso (eat it now) but you can't say "corrilo adesso", since correre is not transitive, so this sentence has no sense.

Don’t miss out on the opportunity to learn a language from the comfort of your own home. Browse our selection of experienced language tutors and enroll in your first lesson now!