1.assign v.(to)指派(to appoint as a task);分配；歸于(to ascribe)

詞根記憶：as+sign(簽名，做記號(hào))--記下某人做某事--指派

例:The most effective way for managers to assign work is to divide complex tasks into their simpler component parts. ll the role assigned by society//Under Mr. Harel's system, each business must assigna value to each job.

派生詞:assignment(n.任務(wù);分配)

2.assist n.幫助(an act of assistance);v.參加，出席(to be present as a spectator);幫助，促進(jìn)(to give support or aid)

聯(lián)想記憶：as+sist(站立)--站在你這邊--幫助

例:They were rarely allowed to assist master tailors in the production of men's clothing.

派生詞:assistance(n.援助，幫助)

3.associate a.聯(lián)合的(joined)；n.臺(tái)伙人(partner; colleague);v.將人或事物聯(lián)系起來(lái)(to join people or things together)

聯(lián)想記憶：as（加強(qiáng)）+soci（看作social社會(huì)的，交際的）+ate(做)--進(jìn)行社交（的人）--合伙人

例:Most customers associate shopping carts with low-quality discount stores.

派生詞:association(n.協(xié)會(huì)，聯(lián)盟；聯(lián)合)

同根詞：dissociate(v.分離：使分裂)

4.association n.協(xié)會(huì)，聯(lián)盟（an organuization persons having a common interest);聯(lián)想（something linked in memory or imagination wrth a thing or person)

詞根記憶：來(lái)自associate(v.結(jié)交；聯(lián)合)

例:They made a transition from old patterns of an association to new ones.

派生詞:associational(a.聯(lián)想的：協(xié)會(huì)的)

同根詞：dissociation(n.分解;分離)

5.assume v.假定，假設(shè)(to suppose);擔(dān)任…的職位(to undertake the duties of)

詞根記憶：as+sume(拿，取)--擔(dān)任

例:It is widely assumed that a museum is helped financially when a generous patron donates a potential exhibit.

派生詞:assumption(n.假定，假設(shè))

6.assumptiori n.假定，設(shè)想(an assuming that something is true)；擔(dān)任(a taking to or upon oneself)

詞根記憶：來(lái)自assume(v.假定，設(shè)想)

例:This claim contradicts the basic assumption of organization theory.

同根詞：presume(v.假定)

7.asteroid n.小行星(a small planet)

詞根記憶：aster(星星)+oid(像…一樣)--小行星

例:Scientists calculated that the asteroid, traveling at 46,000 miles an hour, is on an elliptical path.

派生詞:asteroidal(a.星狀的)

8.asthma n.哮喘( chronic chest illness causing difficulty in breathing )

例:Asthma, a bronchial condition, is a much less common aliment than hay fever.

9.astronomical a.龐大的(enormously or inconceivably large or great);天文學(xué)的(of astronomy)

詞根記憶：astro(星星)+nomical--星星的，星體的--天文學(xué)的

例:It seems likely that a number of astronomical phenomena, such as the formation of planetary nebulas, may be caused by the interaction where two stars orbit each other at close range.

同根詞：astronaut(n.宇航員)

10.astronomy n.天文學(xué)(scientific study of the sun, moon, stars, planets, etc.)

詞根記憶：astro(星，天體)+nomy(學(xué)科)--天文學(xué)

派生詞:astronomical(a.天文學(xué)的)

同根詞：astronaut(n.宇航員)；astrophysics(n.天體物理學(xué))