2012年托福写作句型精解——改变词性

　　改变词性。

　　n.→ Adj.　比如：important改成be of importance

　　n. → v.　When we look at a comparison between A and B…

　　When we compare A and B…

　　Adj. → n.

　　There are a variety of solutions to the problem.

　　There are various solutions to the problem.