网络解释
句首助动词
- 与 句首助动词 相关的网络解释 [注：此内容来源于网络，仅供参考]
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the auxiliary verb
助动词
在句子中,"be"可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).助动词在有实义动词或叫行为动词的句子中对其进行否定和疑问的时候用,否定句时在其后加not,疑问句时把助动词提到句首,后面用动词原型即可.
- 推荐网络解释
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propanone oxime：丙酮肟
propanone hydrogensulphite丙酮合亞硫酸氫鹽 | propanone oxime丙酮肟 | propanoyl chloride丙酰氯
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underweight：不合标准的重量重量不足的
underway 在航在航的 | underweight 不合标准的重量重量不足的 | underwirter's guarantee 保险人保证书
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ophiolitic complex：蛇绿杂岩
"蛇绿岩","ophiolite" | "蛇绿杂岩","ophiolitic complex" | "蛇绿岩铜矿","ophiolitic copper deposit"