比如說He borrowed a book a month ago, 如果我們想表達他拿這本書1個月了需要說he has kept the book for a month, 在完成時態中我們用Kept代替borrow能很好的表達持續性這一動作 。我們如果說她三年前結婚了，我們可以說she married three years ago, 用完成時態時我們需要改成這樣，she has been married for 3 years。
非延續動詞是比較多的，下面我列舉一部分，如leave, borrow, buy, start, begin, move to, end, come , open, become, get up等等。
對於上述非延續動詞它們對應的延續動詞是be away, keep, have, be on, live in , be over, be back, be open, be up等等。
我們舉些例子，我們先拿leave來舉例，she left 2 weeks ago, 這是過去式，說明她兩週前走了，我們表達她已經走了兩週了，就可以說，she has be away for 2 weeks。
我們再拿open來舉例，the gate of the yard was open yesterday,那個院子的大門，昨天是開著的，我們表達院子的門自從昨天就開了，我們可以說，the gate of the yard has been open since yesterday。
比如說He borrowed a book a month ago, 如果我們想表達他拿這本書1個月了需要說he has kept the book for a month, 在完成時態中我們用Kept代替borrow能很好的表達持續性這一動作 。我們如果說她三年前結婚了，我們可以說she married three years ago, 用完成時態時我們需要改成這樣，she has been married for 3 years。
非延續動詞是比較多的，下面我列舉一部分，如leave, borrow, buy, start, begin, move to, end, come , open, become, get up等等。
對於上述非延續動詞它們對應的延續動詞是be away, keep, have, be on, live in , be over, be back, be open, be up等等。
我們舉些例子，我們先拿leave來舉例，she left 2 weeks ago, 這是過去式，說明她兩週前走了，我們表達她已經走了兩週了，就可以說，she has be away for 2 weeks。
我們再拿open來舉例，the gate of the yard was open yesterday,那個院子的大門，昨天是開著的，我們表達院子的門自從昨天就開了，我們可以說，the gate of the yard has been open since yesterday。