绝大多数动词既可作及物动词，又可作不及物动词，其中有几种情况

　　1.通常作不及物动词，偶尔作及物动词：

　　He lived to the age of seventy.

　　他活到了七十岁。(vi.)

　　They are living a happy life.

　　他们过着幸福的牛活。(vt.)

　　She smiled when she saw us.

　　她见到我们时笑了起米。(vi.)

　　She smiled her thanks.

　　她微笑表示感谢。(vt.)

　　2.通常作及物动词，偶作不及物动词：

　　You can not see the wood for the trees.

　　你是见树不见林。(vt.)

　　It's dark，I can't see.

　　天很黑，我什么也看不见。(vi.)

　　The arrow hit the target.

　　箭击中了靶。(vt.)

　　He hit at me，but missed.

　　他设法打我，但没打着。(vi.)

　　3.有不同意思，有时作及物动词，有时作不及物动词(多数动词都如此)：

　　It's hard to please all.

　　要使大家都高兴不容易。(vt.)

　　Come whenever you please.

　　你爱什么时候来就什么时候来。(vi.)

　　Her words moved me deeply.

　　她的话深深感动了我。(vt.)

　　She moved gracefully.

　　她的动作很优美。(vi.)

　　4.有时意思不变，但宾语可省略：

　　-See what I mean?

　　-懂我的意思吗?(vt.)

　　-Yes，I see.

　　是的，明白了。(vi.)

　　Remember your appointment.

　　记住你的约会。(vt.)

　　Don't forget to post my letter.Please remember.

　　别忘了发我的信，请记住。

　　只有少数动词通常只用作vi.，如appear, exist, happen, occur, vanish, ache, bleed, blush, faint, shiver, tremble, cough, cry, weep, scream, snore, yawn, gleam,

　　shine, vibrate, arrive, come, depart, fall, flow，go, kneel, pause等。但在个别情况下也可跟宾语，如weep bitter tears, cough blood, die a heroic death, sigh

　　one's relief。另外有少数动词通常只用作vt.，如have, raise, carry, catch, cover, destroy, use, admire, enjoy, frighten, hate, interest, like, love, need,

　　prefer, surprise, trust, accept, correct, discuss, expect, thank, warn等，只偶作vi.，如She frightens easily. Come if you like.