Non-FiniteVerbs非限定动词、非谓语动词.ppt

Warm-up Exercise People _________ (travel) long distances frequently have _________ (decide) whether they would prefer__________ (go) by land, sea, or air, Hardly anyone can positively enjoy __________ (sit) in a train for more than a few hours. Train Compartments are likely __________ (get) crowded and stuffy. It is almost impossible __________ (take) your mind off the journey. __________ (read) is only a partial solution, for the monotonous rhythm of the wheels __________ (click) on rails soon lulls you to sleep. At night, when you really wish __________ (go) to sleep, you rarely manage __________ (do) so. If you are lucky enough __________ (find) a couchette, you spend half the night __________ (stare) at the small blue light in the ceiling. As a result, you arrive at your destination almost __________ (exhaust). Non-Finite Verbs 非限定动词 又称 非谓语动词 ? Questions ? 为什么称为非限定动词？ 不受主语的人称和数的限制 为什么称为非谓语动词？ 不能单独作谓语 有几种形式？ 不定式（infinitive） 动名词（gerund） 现在分词（present participle） 分词（participle） 过去分词（past participle） ? Questions ? 可作什么句法成分？ Exercise Explanation Gap-Filling: __________ (try) to forget one’s past is impossible． (Trying/ To try) 动名词和不定式都可充当句子的主语。在多数情况下，选择动名词还是不定式作主语对句意影响不大。抽象，有普遍意义的或概念化的动作常用动名词。 有些动名词已几乎成为了表示动作的名词，如：reading，writing，swimming，smoking，jogging，learning，cooking。 True or False: A. It is impossible to try to forget one’s past． B. It is impossible trying to forget one’s past． (A. True B. False) 句型：It is (im-)possible to do sth. OF or FOR A. It’s difficult ____ us to get together . B. It’s thoughtful ____ your mother to get the food ready A. for B. of 句型：It is + adj. + for sb. to do sth. 这类形容词有：easy, difficult, hard, impossible, possible, necessary, important, essential, easy, useless, convenient 句型