7．Helen and I         good friends．（　�。�
A．isB．areC．amD．be

分析 海倫和我是好朋友．

解答 答案：B．考查系動(dòng)詞．句意"海倫和我是好朋友．"．is單數(shù)．a(chǎn)re復(fù)數(shù)．a(chǎn)m與I連用．be原形．主語"海倫和我"．兩個(gè)人，因此用be動(dòng)詞復(fù)數(shù)are．答案是B．

點(diǎn)評 考查系動(dòng)詞，is是單數(shù)，are是復(fù)數(shù)，am通常與I連用，要結(jié)合語境，選擇合適用法，注意人稱及主語的單復(fù)數(shù)變化．

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