2. at no time 從不，決不

3. at present 目前，現(xiàn)在

4. at the cost of ?以……為代價(jià)

5. all means 盡一切辦法，務(wù)必

6. account for 說(shuō)明(原因等)

7. allow for 考慮到

8. arrive at 達(dá)成，得出

9.ask for 請(qǐng)求，要求

10. aim at 瞄準(zhǔn)，針對(duì)

11appeal to 呼吁，要求

12 ask after 詢問(wèn)，問(wèn)候

13. attach to 附屬于，隸屬于

14. a few 有些，幾個(gè)

15.as a matter of fact實(shí)際情況真相

16. a little 一點(diǎn)稍微，一些，少許

17. by accident? 偶然

18. by far? 最，……得多

19. by itself? 自動(dòng)地，獨(dú)自地

20. by means of? 用，依靠