2. 用插入語(yǔ)開(kāi)頭，表示說(shuō)話人的態(tài)度，或使句子的意思更加準(zhǔn)確：
    Strangely enough, Jennifer does not enjoy sunshine and beach.
    Generally speaking, winter in Vancouver is gloomy.
    類(lèi)似的插入語(yǔ)有：
    no wonder no doubt
    in other words in my opinion
    in conclusion in fact
    as a matter of fact　
    3. 用形容詞、并列形容詞或形容詞短語(yǔ)開(kāi)頭，修飾句子的主語(yǔ)，表示主語(yǔ)的特征或狀態(tài)：
    Frantic, the young mother rushed out the door with the baby in her arms.
    Tasty and crisp,potato chip are a favorite snack for both children and adults.
    Happy at his good marks at school, the little boy skipped on his way home.
    Desperete and hopeless, the poor man committed suicide.
    4.用分詞、分詞短語(yǔ)開(kāi)頭：
    （a)修飾句子主語(yǔ)，表示主語(yǔ)所處的狀態(tài)或主語(yǔ)同時(shí)進(jìn)行的另一個(gè)較謂語(yǔ)動(dòng)詞次要的動(dòng)作：
    Scared, the girl moved timidly and cautiously into the dark room.(狀態(tài)）
    Cgased by my dear pet cat, the mouse dashed into a snall hole.(狀態(tài))
    Spoiled by his parents, the naughty boy always insists on things he wants.(狀態(tài)）
    Puffing and hugging, he finished his run.(另一動(dòng)作）
    Looking at herself in the mirror, she fingered her silk scarf on her shoulder.(另一動(dòng)作）
    (b) 修飾謂語(yǔ)動(dòng)詞，表示原因、時(shí)間等
    Lying down on the couch, he felt much relaxed.(時(shí)間）
    Feeling bored, she turned on the TV and switched from channel to channel.(原因）
    Wanting to find out the business hour,she called the store.(原因）
    Having completed the form, dhe mailed it out immediately.(時(shí)間）