room

　　It is important to give children room to think for themselves. She roomed with Mary in college for two years.

　　room在教材中作可数名词用时,意思为“房间”;作不可数名词用时,意思为“空间”。

　　上面两个句子中,第一个room作不可数名词用,意思为“机会”;第二个room作动词用,意思为“租房,合住”。

　　start

　　We won’t finish the job today, but we have made a start. 此句中的start用作名词,意为“开头,开端,起始”,这是start的常用法之一。

　　It started to rain. 此句中的start用作动词,意为“开始”,这是start的常用法之二。

　　除了以上用法外,start还有其它用法。如:

　　① The news gave me quite a start.(start用作名词,意为“吃惊,惊起”。)

　　② Isn’t it time we start back? It’s getting dark. (start back意为“动身返回”。)

　　③ What time do you start for work? (start for... 意为“动身去”。)

　　④ I told him the whole story, from start to finish. (from start to finish意为“自始至终,从头到尾”。)