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Downstream of ... 中的downstream是什么词性

来源:www.hpplm.com 2024-09-08

1. It will pushSMS messagesTOPeopledownstreamofafloodeventgivingthem up to24hoursadvancedwarning.


2. Valvemustbeinstalleddownstreamofreceivertank.


请问这两句中downstream of ... 中的downstream是什么词性呢?形容词?副词?还是名词?我了解形容词后是可以接介词短语的,像kind of you,但这里显然状况不是一样的,请问这里是一种什么使用方法呢?这里的downstream又像形容词,又像副词,还像名词。


有哪位老师可以帮我解答一下这个疑惑吗?不胜感激!


【答】这两句中downstream of ... 中的downstream是副词。

依据《牛津高阶英汉双解词典》第9版p.640, downstream 可以作副词和形容词,作形容词时一般放在名词前面作定语,作副词时可以单独修饰动词或者后接介词短语。如:

adv. drift/float downstream 顺水漂流 /漂浮而下 downstream of/from the bridge 桥的下游方向

adj. downstream areas 下游区域 downstream effects 随之产生的后果


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