來源:網(wǎng)絡(luò)資源 2023-02-18 19:31:05
過去完成時的判斷依據(jù)
1. 由時間狀語來判定
一般說來,各種時態(tài)都有特定的時間狀語。與過去完成時連用的時間狀語有:
(1)by + 過去的時間點(diǎn),例如:
I had finished reading the novel by nine o'clock last night.
到昨天晚上九點(diǎn)鐘為止,我已經(jīng)讀完了這本小說。
(2)by the end of + 過去的時間點(diǎn),例如:
We had learned over two thousand English words by the end of last term.
到上學(xué)期末為止,我們已經(jīng)學(xué)了兩千多單詞。
(3)before + 過去的時間點(diǎn),例如:
They had planted six hundred trees before last Wednesday.
在上周三之前,他們已經(jīng)植了六百棵樹。
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