11.                The managerthe workers how to improve the program since 9 a.m. (tell)

經(jīng)理自從9點起就一直在告訴工人們?nèi)绾瓮晟七@個項目。

11. has been telling考查現(xiàn)在完成進行時的用法。時間狀語"since 9 a.m."暗示時態(tài)應為現(xiàn)在完成時；"一直在告訴"暗示時態(tài)應為進行時，因此結(jié)合起來本句時態(tài)應為現(xiàn)在完成進行時�，F(xiàn)在完成進行時的用法主要有兩種：(1)表示動作從過去某時開始，一直延續(xù)到現(xiàn)在，而且現(xiàn)在還在進行；(2)表示一個近期內(nèi)時斷時續(xù)、重復發(fā)生的動作。其構(gòu)成為have / has been doing sth. 

題目來源：高考丟分題英語 > 專題訓練 2：時態(tài)和語態(tài)

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