有這個(gè)說(shuō)法
（1）現(xiàn)在分詞的主動(dòng)語(yǔ)態(tài)：現(xiàn)在分詞主動(dòng)語(yǔ)態(tài)的一般式表示與謂語(yǔ)動(dòng)詞所表示的動(dòng)作同時(shí)發(fā)生,完成
式表示的動(dòng)作在謂語(yǔ)動(dòng)詞所表示的動(dòng)作之前發(fā)生,常作狀語(yǔ).例如：
They went to the park, singing and talking. 他們邊唱邊說(shuō)向公園走去.
Having done his homework, he played basket-ball. 做完作業(yè),他開(kāi)始打籃球.
（2）現(xiàn)在分詞的被動(dòng)語(yǔ)態(tài)：一般式表示與謂語(yǔ)動(dòng)詞同時(shí)發(fā)生的被動(dòng)的動(dòng)作,完成式表示發(fā)生在謂語(yǔ)動(dòng)
詞之前的被動(dòng)的動(dòng)作.
The problem being discussed is very important. 正在被討論的問(wèn)題很重要.
Having been told many times, the naughty boy made the same mistake.
被告訴了好幾遍,這個(gè)淘氣的孩子又犯了同一個(gè)錯(cuò)誤.
（1）一般式：不定式的一般式所表示的動(dòng)作與謂語(yǔ)動(dòng)詞動(dòng)作同時(shí)發(fā)生或發(fā)生在謂語(yǔ)動(dòng)詞動(dòng)作之后,
例如：
I'm glad to meet you.
He seems to know a lot.
We plan to pay a visit.
He wants to be an artist.
The patient asked to be operated on at once.
The teacher ordered the work to be done.
（2）進(jìn)行式：不定式的進(jìn)行式所表示的動(dòng)作與謂語(yǔ)動(dòng)詞動(dòng)作同時(shí)發(fā)生,例如：
The boy pretended to be working hard.
He seems to be reading in his room.
（3）完成式：不定式的完成式表示的動(dòng)作發(fā)生在謂語(yǔ)動(dòng)詞動(dòng)作之前,例如：
I regretted to have told a lie.
I happened to have seen the film.
He is pleased to have met his friend.