Question

15．當(dāng)他到達(dá)學(xué)校時(shí)，他認(rèn)識(shí)到他把背包忘在家了．（had left）
When he arrived at school，he realized that he had left his backpack at home．

Answer 1

分析 根據(jù)句意，該句用以when引導(dǎo)的時(shí)間狀語(yǔ)從句表達(dá)．

解答 答案：When he arrived at school，he realized that he had left his backpack at home；該題考查學(xué)生的英語(yǔ)表達(dá)能力；根據(jù)句意，該句用以when引導(dǎo)的時(shí)間狀語(yǔ)從句表達(dá)，從句和主句用一般過(guò)去時(shí)表達(dá)，主句中的賓語(yǔ)從句"發(fā)生在過(guò)去的過(guò)去"，用過(guò)去完成時(shí)，過(guò)去完成時(shí)的基本結(jié)構(gòu)結(jié)構(gòu)：had+動(dòng)詞的過(guò)去分詞構(gòu)成；到達(dá)，arrive at；故填When he arrived at school，he realised that he had left his backpack at home．

點(diǎn)評(píng) 根據(jù)句意，確定好句子的時(shí)態(tài)是解題的關(guān)鍵；還要識(shí)記常用短語(yǔ)，運(yùn)用單詞和短語(yǔ)的適當(dāng)形式作答，所以要積累掌握詞匯，識(shí)記常用短語(yǔ)，還要熟練掌握句型．