現在完成進行式
現在完成進行式的構成
現在完成進行式是由兩個要素構成：Be 動詞的現在完成式 (have/has been)，加上主要動詞（原型+ing）的現在分詞。
| 主詞 | has/have been | 動詞原型 + ing |
| She | has been | swimming |
肯定句：She has been / She's been running.
否定句：She hasn't been running.
疑問句：Has she been running?
否定型疑問句：Hasn't she been running?
現在完成進行式，以「to live」為例：
| 肯定句 | 否定句 | 疑問句 |
|---|---|---|
| I have been living | I haven't been living | Have I been living? |
| You have been living | You haven't been living | Have you been living? |
| He, she, it has been living | He hasn't been living | Has she been living? |
| We have been living | We haven't been living | Have we been living? |
| You have been living | You haven't been living | Have you been living? |
| They have been living | They haven't been living | Have they been living? |
現在完成進行式的作用
現在完成進行式涉及以前到現在一段不明確的時間，談的是某件已經發生的事，但也許還沒有結束，強調的是動作的過程和產生的結果，而且這個過程可能還會持續著，或者可能才剛結束。
始於過去且當下仍在持續的動作
She has been waiting for you all day (= 而且她現在還在等待).
I've been working on this report since eight o'clock this morning (= 而且我還沒做完).
They have been travelling since last October (= 而且他們還沒回家).
剛結束的動作，但說話者要強調的是這個動作產生的結果，或對現在造成的影響
She has been cooking since last night (= 而且桌上的食物看起來很美味).
It's been raining (= 街道上還是濕的).
Someone's been eating my chips (= 半包沒了).
不用在進行式的動詞
對於不用在進行式的動詞，就使用現在完成式。例如：I've wanted to visit China for years.
She's known Robert since she was a child.
I've hated that music since I first heard it.
I've heard a lot about you recently.
We've understood everything.
we've heard this morning.