19.It is a blue bag.(改為復(fù)數(shù)句子)
Theseare blue bags.

分析 這是一個藍(lán)色的包.
這些是藍(lán)色的包.

解答 答案:are.考查復(fù)數(shù)句子.is復(fù)數(shù)are,it復(fù)數(shù)those"那些.答案是are.

點(diǎn)評 句型轉(zhuǎn)換中的單數(shù)句子變復(fù)數(shù)句子,通常是將每個有復(fù)數(shù)形式的詞全部變?yōu)閺?fù)數(shù).要根據(jù)具體語境分析判斷.注意一些詞復(fù)數(shù)的特殊變法

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