1.stop to do sth. 和stop doing sth.
    “stop to do sth?！?表示停止做其它事情而去做“to do sth?！彼硎镜氖虑?，可以將“to do sth?！崩斫獬伞皊top”的目的狀語(yǔ);“stop doing sth?！北硎静蛔觥癲oing sth?！彼硎镜氖虑?。
    例如： “Stop talking. Let’s begin our class?！?said the teacher. 老師說(shuō)：“別說(shuō)話了，讓我們開(kāi)始上課。”
    We have kept doing our homework for a long time. Let’s stop to listen to music. 我們做家庭作業(yè)很長(zhǎng)時(shí)間了，讓我們停下來(lái)聽(tīng)聽(tīng)音樂(lè)。
    2.forget to do sth。和forget doing sth. (remember to do sth. 和remember doing sth。)
    “forget to do sth?！北硎緦?lái)不要忘記做某事，談的是未來(lái)的事情;“forget doing sth。”表示忘記過(guò)去應(yīng)該做的事情。
    例如： “Don’t forget to do your homework?！?said the teacher before the class was over.
    老師在下課前說(shuō)：“不要忘記做家庭作業(yè)?！?BR>    “I’m sorry. I forgot doing my homework. May I hand it in this afternoon, Mr. Chen?” said Li Ming.
    李明說(shuō)：“對(duì)不起，我忘記做家庭作業(yè)了。我今天下午交好嗎，陳老師?”
    3.have sth. done。(過(guò)去分詞)(讓別人)做某事
    例如：I had my hair cut yesterday afternoon. 我昨天下午理了發(fā)。
    My computer can not work now. I must have it repaired. 我的電腦有故障了，我必須讓人修好它。
    4. 感官動(dòng)詞后接不帶to的不定式或者現(xiàn)在分詞的區(qū)別
    例如：see sb. do sth?？匆?jiàn)某人(經(jīng)常)做某事 和see sb. doing sth。看見(jiàn)某人(正在)做某事
    I often see him do exercise in the morning. 我經(jīng)常在早晨看見(jiàn)他鍛煉身體。
    When I was walking in the park, I saw him drawing a picture there. 當(dāng)我在公園散步的時(shí)候，我看見(jiàn)他正在那里畫(huà)畫(huà)。
    5. 在主動(dòng)語(yǔ)態(tài)中，感官動(dòng)詞(see, hear, feel, watch等)和使役動(dòng)詞(make, have, let等)要求接不帶to的不定式做賓語(yǔ)補(bǔ)足語(yǔ)，而在被動(dòng)語(yǔ)態(tài)里，不定式要帶上to。
    例如：The boss often made the workers work 10 hours a day.
    The workers were made to work 10 hours a day.
    She was heard to use strong language. 聽(tīng)說(shuō)她罵人了。
    6.常用的幾個(gè)和不定式有關(guān)的句型：
    Why not do sth? 為什么不做某事?
    It takes/took sb. some time to do sth. 做某事花了某人多長(zhǎng)時(shí)間。
    It is/was +形容詞+(for sb。) +to do sth. 做某事(對(duì)某人來(lái)說(shuō))怎么樣。
    7. 介詞后面一般接動(dòng)名詞。同學(xué)們要特別注意介詞to和不定式符號(hào)to的區(qū)別，例如下面的詞組一定要記清：
    prefer doing sth. to doing sth. 喜歡做……不喜歡做……
    look forward to doing sth. 期待/盼望做某事
    make a contribution to doing sth. 為……做出貢獻(xiàn)
    8. 現(xiàn)在分詞和過(guò)去分詞做定語(yǔ)的區(qū)別
    A. 現(xiàn)在分詞含有正在進(jìn)行的意思，而過(guò)去分詞含有被動(dòng)或者已經(jīng)完成的意思，如：
    a developing country 發(fā)展中國(guó)家 a developed country 發(fā)達(dá)國(guó)家
    boiling water 正在沸騰的水(一般情況下水溫為100℃) boiled water 開(kāi)水(已經(jīng)燒開(kāi)的水，水溫可以依然很高，也可以是涼白開(kāi))
    a boy named Jim 一個(gè)叫Jim的男孩
    ?
    

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