In an effort to spread awareness to teens across the nation,the Allstate Foundation sponsored a Keep-The-Drive Summit at Sunset Station on January 23rd.
in an effort to do sth.意为“为做成某事”，置于句首引导目的状语，表示强调，而其后所接的目的也是听音的重点。awareness意为“意识，认识”。sponsor意为“赞助;主办”。summit意为“峰会”。
1. make an effort ( to do sth.)意为“尽力做某事，勉为其难做某事”。如:
Even though yon don't like them, you should make an effort to be polite.
2. make every effort意为“尽一切努力”。如:
Every effort is being made to deal with that problem.
3. be an effort意为“费力，痛苦”。如:
He was so weak that even standing up was an effort。