Idiom: a bunch of
Jim: I need to go to the store to get some pens for my class.
Steve: Really? I have a bunch of extra pens. I can give you like 10 if you want.
Jim: Are you sure? That would be great. Thanks! It'll save me a trip to the store.
Steve: No problem!
Jenny: Hey Cindy, can you do me a big favor? Next week I need a ride to the airport.
Cindy: Next week? No problem! Next week is the beginning of my summer vacation so I will have a bunch of free time.
Jenny: Awesome! I really appreciate it! I'll buy you lunch.
Meaning: "a bunch of" is a very common idiom in American English. It has the same meaning as "a lot of" and it can be followed by both non-count nouns and plural count nouns. This can be seen in the two examples above.
This idiom comes from the LSI book "Speaking Savvy," which is used to teach Level 5 Speaking classes at LSI schools. For more information please visit www.languagesystems.com