September 30 is the day_______which you must pay your bill.

A. by B. for C. with D. in

 

A

【解析】

試題分析：考查介詞的用法。句意：9月30日是你必須付賬單的最后期限。此處by意為：截止到……日期。根據(jù)句意選A。

【知識拓展】by的用法

by表“時(shí)間”時(shí)，意為“在……之前，不遲于”，多與過去完成時(shí)或?qū)硗瓿蓵r(shí)連用。

Will you please finish the work by Friday? 請你星期五之前完成這項(xiàng)工作，好嗎？

The train had left by the time we got to the station. 我們到達(dá)車站時(shí)，火車已離開。

By the time the letter reaches you l will have left the country．到你收到這封信的時(shí)候，我已離開這個國家。

★by可表示“方式、手段”，意為“借、靠”，后接動名詞。

What do you mean by saying that? 你那話是什么意思？

★by可表示“程度或增減的幅度”。

The bullet missed him by two inches.子彈差一點(diǎn)點(diǎn)打中他。

★by可表“單位”，意為“按；以……計(jì)；依據(jù)”，此時(shí)，by之后表單位的名詞通常加the。

I am paid by the hour．我是按小時(shí)拿工資的。

考點(diǎn)：考查介詞的用法。

 

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