主謂一致是英語語法的一個重要的版塊，今天，小編為同學們準備了相關的主謂一致語法體系下的謂語動詞用單數(shù)的清況，一起來看看吧！

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1）當名詞詞組中心詞為表示金錢、時間、度量、距離、價格等復數(shù)名詞時，把這些復數(shù)名詞看作一個整體。謂語動詞采用單數(shù)形式。

Twenty-five dollars is too much to pay for that shirt．

Fifty minutes isn’t enough to finish this test．

Ten miles seems like a long walk to me．

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2） 以“-s”結尾的書刊名、國名、組織名、游戲名、運動名，謂語動詞用單數(shù)以-ics結尾的名詞指一門學科時，常用單數(shù)謂語動詞形式。當這些名詞表示實際內(nèi)容時，謂語動詞則用復數(shù)形式。

這類單詞有： ?economics經(jīng)濟學 ???????electronics電子學

????????????????????? physics物理學 ?????????politics政治學

????????????????????? mathematics數(shù)學 ???????statistics統(tǒng)計學

Roots ?was a novel about a slave family．

His politics were a matter of great concern to his friend．

Politics is his favorite subject．

Statistics show that approximately 40 percent of all marriages in the US end in divorce．

Statistics is a subject that is difficult to learn．

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3）有些表示某類別的總稱的集合名詞，如：machinery(機械)，clothing(衣服)，luggage(行李)，furniture(家具)，equipment(設備)，jewelry(珠寶)等作主語時，謂語動詞常用單數(shù)。如：

My luggage was sent by air．

The equipment of our factory is all imported from Britain.

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4） 不定式、現(xiàn)在分詞和從句作主語，謂語動詞通常用單數(shù)：

Playing with fire is dangerous．

注意： 若用and連接兩個動名詞、不定式短語或主語從句，表示兩個不同的概念，則謂語動詞用復數(shù)形式。若表示同一概念，則謂語動詞用單數(shù)形式

Early to rise and early to bed is a good habit．

When and where the building will be built hasn’t been decided．

主語從句要根據(jù)從句表達的意思而定

What she said is correct． ??????What he gave me are five English books．

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