If he ___ me his telephone number yesterday, I ___ able to ring him up now.
A.told, would beB.had told, would have been
C.had told, would beD.told, am
C

試題分析:句意,如果昨天他告訴我他的電話號碼,我現(xiàn)在就能給他打電話了。這是一個虛擬條件句,條件從句表示的動作和主句表示的動作發(fā)生的時間不一致,所以這是一個錯綜時間條件句。此時主、從句動詞的形式應根據(jù)各自所表示的時間進行調(diào)整,if條件句是對過去的虛擬,故用過去完成時,而主句是對現(xiàn)在的虛擬,故用 would do形式,故選C。
點評:解答這類題時關(guān)鍵是把虛擬條件句中對于現(xiàn)在、過去、將來情況的虛擬,條件句和主句都需要使用什么樣的動詞形式這個表格背下來,然后具體問題具體分析,錯綜時間條件句比較容易識別,通過時間狀語,例如本題中的yesterday和now。
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