―HaveyouknownDr.Jacksonforalongtime?―Yes,sinceshe

問題詳情：

―Have you known Dr. Jackson for a long time?

―Yes, since she________ the Chinese Society.

joined            s                     joined                ed

【回答】

D

解析該句完整的句式是：I have known Dr. Jackson since she joined the Chinese Society. since後跟的時間狀語從句要用一般過去時，表示自從過去某個時間發生的動作到現在以來有多長時間了。

知識點：一般過去時及其被動式

題型：選擇題