She was in contemplative mood.

　　她陷入沉思之中。

　　I went for long, contemplative walks by the river

　　我沿著河走了很久，默默沉思著。

　　She is always polite and considerate towards her employees.

　　她對待雇員總是客客氣氣，關心體諒。

　　Cooperative activity is essential to effective community work.

　　要把社區(qū)工作做好，協(xié)作活動是必不可少的。

　　Be careful with that ─ it cost a lot of money.

　　小心別弄壞那東西，它可值錢了。