记忆方法
1、a- "to" (see ad-) + -vail- "be worth".
中文词源
avail 有益，有用
前缀a-同ad-, 去，往. 词根val, 力量，词源同value, valiant. 指有益的，有力量的。
英语词源
- avail
-
avail: see value
- avail (v.)
- c. 1300, availen, apparently a French compound formed in English from Old French a- "to" (see ad-) + vailen "to avail," from vaill-, present stem of valoir "be worth," from Latin valere (see valiant). Related: Availed; availing. As a noun, from c. 1400.
权威例句
- 1. His efforts were to no avail.
- 他徒劳无功。
- 2. I apologized repeatedly, but to little avail.
- 我一再道歉，但丝毫没有奏效。
- 3. We tried to keep him alive but to no avail.
- 我们全力抢救他,但却徒劳无功.
- 4. They tried artificial respiration but it was of no avail.
- 他们试做人工呼吸,可是无效.
- 5. They entreated and threatened, but all this seemed of no avail.
- 他们时而恳求,时而威胁, 但这一切看来都没有用.
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