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1. 表示乐器的名词前,一般要加定冠词曲,但如果名词前加了定语修饰,则可用不定冠词a或an。
He practices playing the violin every day.
2.与介词均连用表示交通工具的名词前不加冠词,但如果名词前有定语修饰,则需加冠词。
By car / bus / train / bike
He went to the station in a black car.
He went to the park on an old bike.
3. 下列词组中,有无冠词意义不同。试比较:
in hospital 住院(生病)
in the hospital在医院(工作或参观)
out of question 不成问题
out of the question 根本不可能
4. 数词表示确切数目和不确切数目的区别
当数词前出现 a ,two ,three … 或man, several 等词时,数词不加-s 但如果表示不确切数目时,数词需加-s,后边跟of短语。
确切数目 不确切数目
Two dozen eggsThree score (of) studentsSeveral hundred people Dozens of eggsScores of studentshundreds of people
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