本讲为2007年上半年新的教学内容，请对照教材和练习册听录音！

base A on B
A is based on B
Be based on
Highly limited
High highly
Every one wants to fly ___ (high).
He speaks ____ (highly) of me.
How, who, when, where, why, which, what + to
I don’t know how to do it.
Whom
Benefit