| 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 |
- manufacture(manufacture, produce, product, production)
- map(chart, map, graph)
- marginal(marginal, minor, negligible, minimal)
- mariner(sailor, seaman, mariner)
- mark(symbol, badge, sign, signal, mark, token, attribute, emblem)
- marriage(wedding, marriage)
- marvel(marvel, miracle, wonder, phenomenon)
- marvelous(marvelous, wonderful)
- masculine(masculine, male, manly)
- mask(disguise, mask, cloak)
- massacre(kill, murder, slaughter, massacre, assassinate, execute)
- masses(people, masses, crowd, throng, mob)
- match(competition, contest, match)
- match(match, equal, rival)
- material(material, matter, substance, stuff)
- matter(affair, business, matter, concern, thing)
- matter(material, matter, substance, stuff)
- matter(problem, question, issue, matter)
- mature(adult, grown-up, mature)
- mature(mature, ripe)
- mature(mature, ripen, age, develop)
- maybe(maybe, perhaps, possibly, probably)
- may(can, may)
- meadow(lawn, meadow, pasture)
- meal(dinner, meal)
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