來(lái)源:網(wǎng)絡(luò)資源 2023-01-11 20:39:29
過(guò)去完成進(jìn)行
過(guò)去完成進(jìn)行時(shí)用來(lái)描述一項(xiàng)活動(dòng)在其他事情發(fā)生之前已經(jīng)進(jìn)行了多長(zhǎng)時(shí)間。
這種時(shí)態(tài)常與下列時(shí)間短語(yǔ)連用:
... for X hours, days, months, 等等
... since Monday, Tuesday, 等等
基本結(jié)構(gòu)
肯定的
Subject + had + been + verb + ing + object(s) + time Expression
主語(yǔ)+ had + been +動(dòng)詞+ ing +賓語(yǔ)(s) +時(shí)間表達(dá)
She had been waiting for two hours when he finally arrived.
否定的
Subject + had not (hadn't) + been + verb + ing + object(s) + time Expression
主語(yǔ)+ had not (hadn't) + been +動(dòng)詞+ ing +賓語(yǔ)(s) + time
They hadn't been working long when the boss asked them to change their focus.
問(wèn)答
(Question Word) + had + subject + been + verb + ing + object(s) + time Expression
(疑問(wèn)詞)+ had +主語(yǔ)+ been +動(dòng)詞+ ing +賓語(yǔ)(s) +時(shí)間表達(dá)
How long had Tom been working on that project when they decided to give it to Pete?
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