a的用法与搭配
aart.(用于可数名词或单数名词前,表示未曾提到的)一(人、事、物);用于前有形容词或后有短语的不可数名词前;任何一;每一;
a bit 一些;
a body of 一片,大量;
a bolt from the bottle 晴天霹雳;
a bottle of 一瓶
She\'s a changed woman since she got that job.
她自从得到了那份工作,变得判若两人。
A free trade agreement would be advantageous to both countries.
自由贸易协定对两国都会有利。
Respect for life is a cardinal principle of English law.
尊重生命是英国法律最重要的原则。