【題目】She must have finished her homework yesterday, ?

A. mustn`t she B. hasn`t she

C. didn`t she D. doesn`t she

【答案】C

【解析】

試題分析：句意：昨天她一定完成了家庭作業(yè)，不是嗎？當(dāng)句子使用“情態(tài)動(dòng)詞+have done”表示對(duì)過(guò)去情況的推測(cè)時(shí)，如果句中有過(guò)去時(shí)時(shí)間狀語(yǔ)，就對(duì)過(guò)去時(shí)反問(wèn)；如果沒(méi)有過(guò)去時(shí)時(shí)間狀語(yǔ)，就對(duì)現(xiàn)在完成時(shí)反問(wèn)。本句中含有yesterday，并且句中是行為動(dòng)詞finish，所以使用助動(dòng)詞did進(jìn)行反問(wèn)。故C正確。

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