only /ˈəunli/ I. adv. 仅仅，只：They have only one bicycle.他们只有一辆自行车。He drinks water only.他只喝水。［考句］Only by shouting at the top of his voice was he able to make himself heard.他只有竭力叫喊才能让人听见。（only加状语放在句首时，必须部分倒装语序） not only …but also 不仅，而且(见but条)  only too 太，非常（修饰adj.）：“Would you like to make a donation?” “I’d be only too pleased.”你愿意参加捐献吗？”“那我太高兴了。” ‖II.adj.惟一  的，仅有的：the only sone独生儿子 You are the only person here who can speak English.你是这里惟一会说英语的人。It was the only way out.那是惟一的出路。‖III.conj. 但是，只不过：The book is likely to be useful, only it’s rather expensive. 这本书可能很有用，只是相当贵。