7.---Do you know who invented the telephone?
---No.I only know it ________________ in 1876.( 。
A.inventedB.was inventedC.invents

分析 --你知道電話是誰(shuí)發(fā)明的嗎?
--不,我只知道電話是1876年發(fā)明的.

解答 答案:B.
首先根據(jù)時(shí)間狀語(yǔ) in 1876,判斷句子中的謂語(yǔ)動(dòng)詞用一般過(guò)去時(shí),主語(yǔ)it(the telephone)是動(dòng)作invent的承受者,所以用被動(dòng)語(yǔ)態(tài),一般過(guò)去時(shí)被動(dòng)語(yǔ)態(tài)的構(gòu)成是:主語(yǔ)+was/were+動(dòng)詞的過(guò)去分詞,主語(yǔ)是it,be動(dòng)詞用was,故選B.

點(diǎn)評(píng) 本題考查時(shí)態(tài)和語(yǔ)態(tài).每個(gè)時(shí)態(tài)都有標(biāo)志詞,熟記這些標(biāo)志詞是做題的關(guān)鍵.在沒(méi)有時(shí)間狀語(yǔ)的情況下可以根據(jù)語(yǔ)境來(lái)對(duì)時(shí)態(tài)做出判斷.判斷語(yǔ)態(tài)的關(guān)鍵則是觀察主語(yǔ)是謂語(yǔ)動(dòng)詞的執(zhí)行者還是承受者.

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