18.accuse vt.指控，指責(zé) accuse sb of (doing ) sth 控告…

　　19.accustomed adj.習(xí)慣的，適應(yīng)的，慣常的

　　be/ get/ become accustomed to doingHe was soon accustomed to getting up early.

　　20.ache vi./n headache / toothacheMy back aches so much.

　　21.achieve vt 達(dá)到;取得 achievement n 成就

　　achieve success/victory/one’s goal;

　　22.achievementn.成就，業(yè)績(jī);完成(任務(wù)等) make great achievements

　　23.acknowledge v.承認(rèn)，致謝

　　It is generally acknowledged that global warming is caused by greenhouse gases.

　　Yaoming is acknowledged as/ to be the best player in China.

　　I acknowledged financial support from the local government.

　　24.across prep cross v.I walked across the street.; cross a street;come/run across碰到

　　25.act n.法令，條例vt.表演，扮演，行動(dòng)，做事

　　act as 充當(dāng);扮演 act out 把…表演出來(lái)

　　26.action n.行動(dòng)take action to do sthput sth into action 把…付諸實(shí)施

　　27.active adj.積極的;主動(dòng)的 take an active part in /be active in 積極參加

　　28.activity n.活動(dòng) outdoor activities 戶外運(yùn)動(dòng)

　　29.actual a.實(shí)際的actuallyadv. in (actual) fact 實(shí)際上

　　30.adapt vi.適應(yīng)，適合，改編vt.使適應(yīng)adapt to change /the city life

　　adapt oneself to the new surroundings adapt the novel for a film adaptation n.適應(yīng)

　　31.add vt 添加，增加，補(bǔ)充說(shuō)(that)

　　add(…)to 添加add up 把…加在一起 add up to總計(jì)為; 總數(shù)為

　　a) His illness added to our trouble.b) He added that he would come again.

　　c) Please add these figures up.d) These numbers add up to 100.

　　e) He added some salt to the water.

　　32.addressn.地址 vt.寫地址;向…講話(尤指演講)

　　address the letter to sb.給某人寄信 The letter was wrongly addressed.

　　The president addressed the public.

　　33.adjust vt.調(diào)整，調(diào)節(jié)，適應(yīng)adjust your speed /the volume/ the camera

　　adjust to the dark/ the single life adjust yourself to the student life adjustment n.調(diào)整，調(diào)節(jié)

　　34.admire v 欽佩.;羨慕

　　admire sb for sth I admire John for his courage.