1. 非延續(xù)性動詞可用來表示某一動作完成，因此可用于現(xiàn)在完成時。如：
The train has arrived. 火車到了。
Have you joined the computer group? 你加入電腦小組了嗎?
2. 非延續(xù)性動詞表示的動作極其短暫，不能持續(xù)。因此，不可與表示一段時間的狀語連用(只限肯定句)。如：
(1) 他死了三年了。
誤：He has died for three years.
正：He has been dead for three years.
正：He died three years ago.
正：It is three years since he died.
正：Three years has passed since he died.
(2) 他來這兒五天了。
誤：He has come here for five days.
正：He has been here for five days.
正：He came here five days ago.
正：It is five days since he came here.
正：Five days has passed since he came here.
(1)、(2)句中的die、come為非延續(xù)性動詞，不能與表示“時間段”的狀語連用。那么，應(yīng)如何正確表達呢?可以采用下面的四種方法：
a. 將句中非延續(xù)性動詞轉(zhuǎn)換為相應(yīng)的延續(xù)性動詞，如上面兩例中的第一種正確表達方式。下面列舉幾例：leave→be away, borrow→keep, buy→have, begin/start→be on, die→be dead, move to→live in, finish→be over, join→be in/be a member of, open sth.→keep sth. open, fall ill→be ill, get up→be up, catch a cold→have a cold。
b. 將句中表示“時間段”的狀語改為表示過去確定時間的狀語，如下面兩例中的第二種正確表達方式。
c. 用句型"It is+段時間+since..."表達原意，如上面兩例中的第三種正確表達方式。
d. 用句型"時間+has passed+since..."表達原意，如上面兩例中的第四種正確表達方式。
3. 非延續(xù)性動詞可用于現(xiàn)在完成時否定式中，成為可以延續(xù)的狀態(tài)，因而可與表示“時間段”的狀語連用。如：
He hasn't left here since 1986. 從1986年以來他就沒離開過這里。
I haven't heard from my father for two weeks. 我已經(jīng)兩周沒收到我父親的來信了。
The train has arrived. 火車到了。
Have you joined the computer group? 你加入電腦小組了嗎?
2. 非延續(xù)性動詞表示的動作極其短暫，不能持續(xù)。因此，不可與表示一段時間的狀語連用(只限肯定句)。如：
(1) 他死了三年了。
誤：He has died for three years.
正：He has been dead for three years.
正：He died three years ago.
正：It is three years since he died.
正：Three years has passed since he died.
(2) 他來這兒五天了。
誤：He has come here for five days.
正：He has been here for five days.
正：He came here five days ago.
正：It is five days since he came here.
正：Five days has passed since he came here.
(1)、(2)句中的die、come為非延續(xù)性動詞，不能與表示“時間段”的狀語連用。那么，應(yīng)如何正確表達呢?可以采用下面的四種方法：
a. 將句中非延續(xù)性動詞轉(zhuǎn)換為相應(yīng)的延續(xù)性動詞，如上面兩例中的第一種正確表達方式。下面列舉幾例：leave→be away, borrow→keep, buy→have, begin/start→be on, die→be dead, move to→live in, finish→be over, join→be in/be a member of, open sth.→keep sth. open, fall ill→be ill, get up→be up, catch a cold→have a cold。
b. 將句中表示“時間段”的狀語改為表示過去確定時間的狀語，如下面兩例中的第二種正確表達方式。
c. 用句型"It is+段時間+since..."表達原意，如上面兩例中的第三種正確表達方式。
d. 用句型"時間+has passed+since..."表達原意，如上面兩例中的第四種正確表達方式。
3. 非延續(xù)性動詞可用于現(xiàn)在完成時否定式中，成為可以延續(xù)的狀態(tài)，因而可與表示“時間段”的狀語連用。如：
He hasn't left here since 1986. 從1986年以來他就沒離開過這里。
I haven't heard from my father for two weeks. 我已經(jīng)兩周沒收到我父親的來信了。