“-plain-/-plang-”: bewail; lament（挽歌）→complain; complaint

“-plan-/-plain-”: flatten; level（平坦）→explain; explanation; plain

“-plaud-/-plaus-/-plode-”: clap（拍手；鼓掌）→applaud; applause; explode; plausible

“-ple-/-pli-/-ply-”: fill up（充满）→accomplish; complement; complete; compliment; comply; implement; plenty; supply; depletion*; replenish*; replete*

“-plec-/-plic-/-plo-/-ply-”: braid; fold（折叠）→appliance; application; apply; complex; complicate; complicated; diploma; diplomatic; display; duplicate; employ; employment; explicit; exploit; implication; implicit; imply; multiply; perplex; plait; plight; reply; simple; simplicity; simplify; simply; deploy*; plait*; pleat*

“-plor-”: weep; cry（哭泣；争夺）→deplore; explore; implore*

“-point-/-punt-”: point（点）→appoint; appointment; punctual

“-pon-/-pos-/-pound-”: put; place（放置；地点）→component; compose; composite; composition; compound; deposit; disposal; dispose; disposable; disposition; expose; exposure; impose; opponent; oppose; opposite; poem; poet; poetry; pose; position; positive; post; postage; postcard; poster; postman; postpone; posture; preposition; proposal; propose; proposition; suppose; appose*; decompose*; potency*; presupposition*; proponent*; repose*

“-pop-/-pub-”: crowd; nation; people（大众；民众）→people; pop; populace; popular; population; populist; public; publication; publicity; publish; republic; republican

“-port-”: carry; approach（接近）→import; importance; important; report; opportunity; port; portable; report; reporter; support; transport

“-poss-/-pote-”: to be able; to have power（能力；力量）→impossible; possess; possession; potent; possible; possibility; possibly; potential; power; powerful; omnipotent*

“-prac-/-prag-”: do; act（做；实践）→practical; practically; practice; practicality; practitioner; pragmatic

“-pris-/-prehend-/-prehens-”: seize; hold（抓，拿，取；容纳）→comprehend; comprise; prison; prisoner; surprise; apprehension*

“-press-/-prem-/-prin-”: press; imprint; strike（打击；撞击）→compress; depress; impress; oppress; press; pressure; print; repression; suppress; reprimand*

“-prim-/-prem-/-prote-”: first（第一，首要，首先）→premier; primary; prime; primitive; prince;

principal; protein; prototype; pristine*

“-pris-/-prais-/-prec-”: prize; value（奖励；称道；珍惜）→appraise; prize; appreciate; enterprise; entrepreneur; interpret; praise; prize; price; premium

“-priv-/-propr-/-proach-/-prope-/-prox-”: one’s own; make one’s own; single // near（自我，自己；接近）→appropriate; approximate; deprive; peculiar; proper; property; privacy; private; privilege; // approach; reproach

“-prov-/-prod-”: profit; beneficial（益处；好处）→improve; improvement

“-prove-/-prob-”: test; prove（测试；证明）→approve; probability; probable; proof; prove; probation*

“-pun-/-pen-/-pain-/-poi-”: punish; grief; penalty; pierce（痛苦；惩罚）→pain; penalty; pen; point; punish; punitive*

“-put-”: think（思考；思索）→computer; computer; deputy; dispute; repute

“-quali-”: state; nature（所属类别；属性）→qualification; qualify; qualitative; quality

“-quanti-”: extent; amount（所有数量；多少）→quantity; quantify; quantitative

“-quart-”: fourth（四分之一）→quart; quarter; quarterly; square

“-quir-/-quis-/-quer-/-quest-”: get; seek（争，夺，抢）→acquire; acquisition; conquer; conquest; quest; cry; enquire; exquisite; inquire; inquiry; quarrel; quest; question; questionnaire; request; require; requirement; quiz; exquisite*; prerequisite*; querulous*

“-rad-/-rude-”: root; ray（根；散发；放射）→radiant; radiate; radiation; radical; radio; radius; ray; root; radium*; rude; rudimentary*

“-range-/-range-/-ray-”: range; put in a row（安排）→arrange; array; range

“-rap-”: seize; beat（打；夺；抢）→rap; rape; rapid; rapt*; rapture*; ravage*

“-rat-/-reas-”: thinking; reasoning; calculate（掂量；计算；推理）→rate; ratio; ration; read; reader; reason; reasonable; reckon

“-rect-/-reg-/-rig-/-roy-/-rex-”: straight; make straight; lead straight; rule; king（皇帝；规则；命令）→alert; correct; direct; direction; directly; director; erect; escort; rectangle; rectify; right; rigorous; upright; realm; regime; region; regular; regulate; regulation; reign; rich; royal; royalty; rule; ruler

“-relate-”: relation（说法；关联）→correlate; correlation; relation; relativity; relate; interrelation

“-rest-/-rit-”: stand firm; established; stop（稳健；静止；停止）→arrest; irritate; rest; restless

“-riv-/-rip-/-rig-”: riverbank; reach the bank; stream（河流；起源；河畔）→arrive; arrival; derive; rival; irrigate; ripple; rise; river

“-rod-/-ros-”: gnaw; scrape; shave（啃；磨）→corrode; corrosion; erosion; rat; razor

“-rogat-”: ask（询问）→arrogate; interrogate

“-roll-/-rot-”: roll; turn（滚动）→control; role; roll; rotate; rotary

“-rud-”: rush; fall（匆促；下降）→rude; ruins

“-rupt-”: break（打破；破裂）→abrupt; bankrupt; corrupt; disrupt; erupt; interrupt; route; routine

“-sacer-/-sanc-”: holy（神圣）→sacred; sacrifice; saint; sanction

“-sala-/-salt-/-saus-”: salt（盐）→salad; salary; salt; sauce; saucer; sausage; saline*

“-salt-/-sult-”: leap（跳跃）→assault; insult; result; resultant

“-salv-/-salu-”: safety（安全）→safe; safety; safeguard; salute; salvage; save; saving

“-sati-/-satu-”: enough（足够；充足）→asset; satisfy; satisfactory; satisfied; saturate; sad; satire; satisfaction; satisfactory; satisfy; saturate; insatiable*

“-scala-/-scend-/-scent-”: ladder（梯子；爬；高）→ascend; ascent; descend; descendant; descent; transcend; transcendentalist*; escalate; scale; scan

“-scam-/-shame-”: shame（惭愧）→ashamed; shame

“-sci-”: know（认知）→conscience; conscientious; conscious; consciousness; science; scientific; scientist; subconsciously*

“-scrib-/-scrip-”: write; writing（写）→describe; description; manuscript; prescribe; prescription; script; subscribe; transcript*; conscription*; scribbler*; scripture*

“-sect-/-sec-/-seg-”: cut（分；离）→insect; intersection; sail; sailor; saw; sect; section; sector; segment; sex

“-secu-/-sequ-/-sic-”: follow（跟从；随从）→consecutive; consequence; consequent;

consequently; execute; executive; intrinsic; persecute; prosecute; pursue; pursuit; second; secondary; sequence; subsequent; sue; suit; suitable; suite; ensue*

“-sem-/-sim-”: bring together（聚合；聚拢）→assemble; assimilate; similar; simulate; resemblance; resemble; same; seem; similar; simulate; simultaneous

“-sens-/-sent-/-cens-”: feeling（感受；认知）→census; consensus; consent; nonsense; resent; scent; sensation; sense; sensible; sensitive; sentiment; sentence; resentment*; sensory*

“-sere-/-sert-”: join（加入；连接）→assert; desert; exert; insert; serial; series

“-serv-”①: keep safe; keep; watch（保持；看护）→conserve; conservation; conservative; observe; preserve; reservation; reserve; reservoir

“-serv-/-servr-”②: serve; slave（奴隶）→deserve; dessert; servant; serve; service

“-sess-/-sid-”: sit（处于；座位；坐）→assess; obsess; possess; possession; preside; president; reside; resident; residence; saddle; seat; seize; sit; session; set; settle; siege; sit; site; situated; situation; subsidy; sedative*; subside*; dissident*

“-sid-”: stars（星星）→consider; considerable; considerate; considerably; consideration

“-sign-”: mark out（标记）→assign; sign; signify; design; designate

“-sip-/-sup-”: throw（扔；投）→dissipate

“-soci-”: join; an ally; companion（加入；联盟；伙伴）→associate; association; sociable; social; socialism; society; sociology

“-sole-/-sola-/-solu-”: alone; lonely（孤独）→desolate; sole; solitary

“-sole-/-soli-/-sil-”: pleasure; strong; firm（强健；稳健）→console; consolidate; silly; solid; solitary

“-solv-/-solu-”: loose; release; free from debt（松解；放松）→dissolve; resolute; resolve; resolution; soluble; solution; solve

“-sorb-”: suck in（吸入）→absorb

“-spec-”: individual; species（个体；种类）→especial; especially; special; specialize; specialist; specialty; specific; species; specification; specify; spice; spicy

“-spect-/-spi(s)-”: look; sight; watch（看，视力；认知）→aspect; conspicuous; despise; despite; expect; expectation; inspect; perspective; prospect; prospective; respect; respective; retrospect;