1.preoccupation n．先入之見(something that engages the interest or attention beforehand or preferentially);n．入神(extreme or excessive concern with something)

詞根記憶：pre(先)+occupation(占據(jù))——預(yù)先占據(jù)——先入之見

例：The historian who writes the record of the past inevitably reflects the preoccupations of his own time.

2.prepay v.預(yù)先支付（某費用）(o pay in advance)

例：A newly instituted program will allow parents to prepay their children's future college tuition at current rates.

3.preponderance n.（壓倒性）優(yōu)勢：多數(shù)（majority）

聯(lián)想記憶：pre(前面)+ponder(重量)+ance——重量排名靠前——優(yōu)勢：多數(shù)

例：The enemy have a marked preponderance in the air.

4.prerequisite n．先決（必備）條件，前提(required as a condition for sth. to happen or exist)

詞根記憶：pre(預(yù)先)+requisite(要求)——預(yù)先要求——先決條件

例：A degree is an essential prerequisite for employment at this level.

5.prescribe v.開（藥），開處方(to write, give or order the use of, esp. medicine, remedy, etc.)

詞根記憶：pre(預(yù)先)+scribe(寫)——預(yù)先寫好——開處方

例：Physicians have the final say as to whether to prescribe a medication for a patient.

派生詞：prescription(n．處方)

6.prescription n．藥方(a written direction for a therapeutic or corrective agent);指示(the action of laying down authoritative rules or directions);慣例( convention)

詞根記憶：來自prescribe(v.開處方)

例：A proposed law would allow general advertising of prescription medications.

同根詞：prescriptive(a．規(guī)定的，指定的)

7.presentation n.報告；陳述(something presented)

詞根記憶：來自present(v.介紹)

例：At the stockholders meeting, investors heard a presentation on the numerous challenges the company faced.

8.preservation n．保存，保留(of or relating to protecting or maintaining）

詞根記憶：來自preserve(V．保護(hù)，保存)

例：That is exactly why a more sensible preservation strategy would be to assist the farmers to modernize their farms to the extent needed to maintain viability.

9.preservative a．防腐的(having the power of preserving)；n．防腐劑(an additive used to protect against decay)

詞根記憶：pre(預(yù)先)+serv(保持)+ative(……的)——預(yù)先用來保存的——防腐的

例：These wine makers have been able to duplicate the preservative effect produced by adding sulfites by means that do not involve adding any potentially allergenic substances to their wine.