we need to learn much about computer,-------- we[反问疑问句】

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we need to learn much about computer,-------- we[反问疑问句】

we need to learn much about computer,-------- we[反问疑问句】
we need to learn much about computer,-------- we[反问疑问句】

we need to learn much about computer,-------- we[反问疑问句】
needn't

don't we?确定的,很明显need在这里是实义动词。