| 单词 |
when(when, while, as) |
| 例句 |
when, while, as
这些连词均可表示“当……时”引出时间从句。
when → 所引导的从句，其谓语动词既可是持续动词，也可是短暂动词；谓语动词动作发生的时间可以与主句谓语动词的动作是同时，或之前、之后。
while → 句中的谓语动词应为持续动词，不用短暂动词，谓语动作发生的时间通常与主句谓语动词动作发生时间是同时。
as → 侧重指从句与主句的动作同时进行，谓语动词可以是持续性的，可以是短暂性动词。
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| 随便看 |
- aggression(aggression, invasion, assault, attack, offensive)
- agitate(upset, agitate, disturb, perturb)
- ago(ago, before)
- agony(agony, auguish, torment, torture, grief, misery, distress, sorrow)
- agreeable(pleasant, agreeable, nice)
- agree(agree, accord, coincide, conform, correspond)
- agree(agree, consent, approve, comply, subscribe)
- agreement(agreement, contract, treaty, convention, bargain, understanding, accord)
- agree on(agree to, agree on, agree with)
- agree to(agree to, agree on, agree with)
- agree with(agree to, agree on, agree with)
- aid(aid, assist, help)
- aim(aim, goal, purpose, end, target, object, objective)
- air(atmosphere, air, gas)
- air(attitude, air, manner)
- aircraft(aeroplane, airplane, aircraft, plane, jet, helicopter)
- airplane(aeroplane, airplane, aircraft, plane, jet, helicopter)
- alarm(alarm, fear, fright, horror, panic, terror, dread)
- alarm(alarm, frighten, startle, terrify, scare, intimidate)
- alien(stranger, foreigner, alien, immigrant)
- alike(alike, like, similar, comparable, parallel, uniform, identical)
- alive(alive, live, living)
- all but(anything but, nothing but, all but, none but)
- allege(assert, affirm, allege, maintain, testify, claim)
- alliance(league, federation, union, alliance)
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