摘要：1．[2010·全国大联考]-You didn’t invite Mary to the ball? - her, too? A．Must I invite B．Should I have invited C．Must I have invited D．Should I invite 1B考查情态动词的用法.“should have done sth． 结构表示“本该做但事实上并未做某事 .另外注意第一句的陈述语序后面用问号表示疑问的语气.意思是“难道你 -?

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