精英家教網 > 初中英語 > 題目詳情
I don’t know when my son ________ back. When he_________ back, I’ll call you.
A.comes, comesB.will come, will come
C.comes, will comeD.will come, comes
D

試題分析:句意:我不知道我的兒子什么時間回來,當他回來了我會給你打電話。賓語從句的結構:主語+謂語+連接詞+從句。從句在句中作賓語。從句要用陳述句的語序。如果主句是一般現(xiàn)在時,從句根據需要選擇時態(tài),如果主句是過去時態(tài),從句要用相應的過去時態(tài)。第一個句子是賓語從句。時間狀語從句中如果主從句的動作都沒有發(fā)生,為了區(qū)別兩個動作的先后關系,遵從主將從現(xiàn)的原則,第二個句子是時間狀語從句,故選D。
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