Meaning of "Pretty"

　　Native speakers make a clear distinction between pretty easily (easily) and pretty easily (a little difficult).

　　Repeat the answers after me paying close attention to your stress.

　　Question: How did you like the movie?

　　Answer:

　　......1......

　　It was pretty good.

　　(She liked it.)

　　......2......

　　It was pretty good.

　　(She didn't like it much.)