1704933460

1704933461 equipment是“设备”、“装备”的总称，为不可数名词：

1704933462

1704933463 They carried most of their equipment on their backs. 他们把大部分装备都背在背上。

1704933464

1704933465 We’re out to standardize equipment in factories. 我们将使工厂的设备标准化。

1704933466

1704933467 His firm supplied kitchen equipment. 他的公司供应厨房设备。

1704933468

1704933469 若表示“一件设备”，可用a piece of表示：

1704933470

1704933471 This is a very useful piece of equipment. 这是一件非常有用的设备。

1704933472

1704933473 He carried a number of pieces of equipment with him. 他带有许多件设备。

1704933474

1704933475 instrument和apparatus都是可数名词，表示“一件仪器（装置）”：

1704933476

1704933477 The factory is now able to mass-produce instruments of high quality. 这家工厂现在能大量生产高质量的仪器。

1704933478

1704933479 All surgical instruments must be sterilized before use. 所有外科用具使用前都要消毒。

1704933480

1704933481 This apparatus can purify a thousand gallons of water a minute. 这种装置一分钟可净化一千加仑的水。

1704933482

1704933483 The apparatus below is used for measuring quantities of heat energy. 下面这种装置是用来测量热能的。

1704933484

1704933485 张道真英语用法（大众珍藏版·第二版） [:1704917372]

1704933486 366 -er

1704933487

1704933488 -er是用来构成名词的后缀（词尾），可以：

1704933489

1704933490 加在动词后，表示某种职业的人或某种人：

1704933491

1704933492 admirer advise announcer baby-sitter baker 　bather beginner believer breaker builder buyer commander commissioner controller dancer dealer defender designer developer diner discoverer driver employer entertainer fighter finder fitter follower founder grower helper killer labourer leader learner leaver lecturer loser lover maker manufacturer matchmaker miller miner onlooker overseer owner painter passer-by payer pitcher planner player plumber producer receiver reporter runner seller sender singer street-walker supporter talker teacher teller thinker trader treasurer turner user viewer wage-earner waiter waver worker writer 加在动词后，表示某种工具或物品：

1704933493

1704933494 air-conditioner aircraft carrier blotter can-opener comforter computer condenser cooker cutter damper drawer duster eraser feeler freezer harvester lighter liner magnifier pain-killer pointer recorder reminder ruler screw-driver starter telephone receiver timer tracer vacuum cleaner 加在名词等后构成名词表示某类人：

1704933495

1704933496 banker carter docker footballer golfer gunner Londoner northerner outside photographer southerner teenager westerner 另外，还可加在形容词或副词后，构成比较级：

1704933497

1704933498 shorter

1704933499

1704933500 simpler

1704933501

1704933502 commoner

1704933503

1704933504 earlier

1704933505

1704933506 happier

1704933507

1704933508 narrower

1704933509

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