I wonder whether the soldier is one of those who _______ abroad to keep peace.
A．has been sentB．have been sentC．have sentD．has sent
B

試題分析：考查主謂一致：句意：我想知道是否這個士兵是要被派出國維和的士兵之一。Who引導(dǎo)的是定語從句，定語從句的謂語和先行詞保持一致，這個定語從句的先行詞是those，謂語是復(fù)數(shù)，還有soldier和send是被動關(guān)系，所以選B。
點評：在英語中，句子的主語和謂語動詞要保持?jǐn)?shù)上的一致關(guān)系，叫主謂一致。這種關(guān)系通常要遵循下面三條原則：1．語法一致原則。句子的主語是單數(shù)形式，謂語動詞要用單數(shù)形式；主語是復(fù)數(shù)形式，謂語動詞用復(fù)數(shù)形式2．意義一致原則即謂語動詞該用單數(shù)還是復(fù)數(shù)取決于主語所表達的內(nèi)容在含義是單數(shù)意義還是復(fù)數(shù)意義。3．鄰近原則謂語動詞該用單數(shù)還是復(fù)數(shù)形式，取決于最鄰近它的名詞、代詞或其它詞的數(shù)。
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