知識(shí)貝殼
知識(shí)貝殼
用法a set of后面接的名詞一定是復(fù)數(shù)形式,當(dāng)a set of用于句中作主語(yǔ)時(shí),謂語(yǔ)則必須用單數(shù)形式。如果是two sets of,謂語(yǔ)就用復(fù)數(shù)形式。例如:① A set of keys is on the paper.一串鑰匙放在紙上。② The three sets of suits are on the bed.這三套西服在床 ......（本文共 148 字 ） [閱讀本文] >>