時間狀語：典型的表時間的詞與現(xiàn)在完成時連用

與for 、since、 already、 yet、 ever、 never、 recently、just、before、 so far、 by now、 …等連用.

注意: for+一段時間 since+過去的某一個時間點

I have lived in Nanning for ten years.

I have lived in Nanning since ten years ago/ 2002.

I haven’t eaten anything for ten hours.

I ha haven’t eaten anything since 6am.

already :用于肯定句, 可放在助動詞之后、過去分詞之前，也可放在句末.

I have already finished my homework.

yet: 用在疑問句中意為”已經(jīng)”, 用在否定句中表示”還”, 常放在句末.

Have you finished your homework yet?

I haven’t finished my homework yet.

ever: 曾經(jīng) 用于疑問句中：

Have you ever been to Beijing?

Have you ever been to Shanghai ?

你去過上海嗎?

never:未曾 從未

I have never traveled by plane before.

我以前從來沒有乘飛機旅行過.

recently：最近 用于肯定 否定 疑問句中

I have been busy recently.

We have not seen Tom recently.

Have they been here recently.

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