1.Professor Smith did a very interesting experiment in his lab yesterday.(改為一般疑問(wèn)句)
Did Professor Smithdo a very interesting experiment in his lab yesterday?

分析 史密斯教授昨天在他的實(shí)驗(yàn)室里做了一個(gè)很有趣的實(shí)驗(yàn).
史密斯教授昨天在他的實(shí)驗(yàn)室里做了一個(gè)很有趣的實(shí)驗(yàn)嗎?

解答 答案:Did; do  根據(jù)句子中"Preofessor Smith did…"中動(dòng)詞did和時(shí)間狀語(yǔ)yesterday可知這是時(shí)態(tài)為一般過(guò)去時(shí)的句型.句子中did為實(shí)義動(dòng)詞do的過(guò)去式,改為一般疑問(wèn)句應(yīng)該以助動(dòng)詞did開(kāi)頭,謂語(yǔ)動(dòng)詞要用原形do,故填:Did; do.

點(diǎn)評(píng) 改為一般疑問(wèn)句,首先判斷句子的時(shí)態(tài),選擇合適的助動(dòng)詞、be動(dòng)詞或者情態(tài)動(dòng)詞開(kāi)頭,并要注意謂語(yǔ)動(dòng)詞形式的變化的.

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