- 指“空气”时,air前通常不加the,只在theairwe breathe等表达中才用the。特指“空中”时,air前加the, 而byair不用the。
We can now travel by air.
句中的by若改成through,则该加the。
- takeair指“传开”,take theair指“到户外”,take to theair指“开始飞行”,in theair指“在空中”,而in the openair指“户外,露天”。
Many birds are flying in the air.
I am going out for a walk in the open air.
- air指“天空”时,要注意与sky的区别,像句子The moon is in theair就是错误的,air应该替换成sky;
- on theair和over theair是固定搭配词组,指“无线电广播”。
She is on/over the air.
她正在广播。