第三阶段第42天.pdf
第 42 天 不定式（三）学习要点 一、形容词+不定式结构 二、疑问词+不定式结构在句子中的应用。三、原形动词+ing和不定式的区别。家教点窍 一、当主语是“人”表语是 happy、sorry、afraid、able等形容词时，后面常会出现不定式，这时不定式作状语。如：Im sorry to hear that.二、疑问句 what、who(m)、where、whether、how、which+不定式，可在句中作主语、宾语或表语。三、ing形式和不定式都可做宾语，和动词之间有种固定的搭配，但介词宾语通常用 ing形式。典型例题 例 1 选择填空。The question was to take the children to the theatre or to leave them at home.(A)how (B)however (C)if (D)whether 评析 疑问句+不定式结构通常作 decide、find out、forget、know、learn、remember等动词的宾语，但这种结构也可作主语或表语，在本例中作表语。不定式只能和 whether不能和 if 连用。答案选（D）。例 2 动词填空。The light is still on。Oh,I forgot .(A)turning it off (B)turn it off(C)to turn it off (D)turning it off 评析 forget后面接不定式时，不定式所表示的动作未发生；后面接动名词时，动名词所表示的动作发在 forget之前。答案选(C)。例 3 动词填空。It is impossible to the work in a week。(A)for me to finish (B)of me to finish (C)for me finishing (D)of me finishing 评析 形容词后通常跟不定式。不定式复合结构前的形容词如果用于说明事，则复合结构中的介词用 for，如果是用于说明人，则用 of。impossible说明工作。答案选(A)。强化训练 一、动词填空。1.I tried my best to do what I could (help)Xiao Chen with his lessons.2.They spent the rest of the afternoon watch TV。3 I cant help (laugh)when I saw the old man dance.4.Its kind of you (lend)me such a good book.5.A knife can be used (cut)things.6.She has made up her mind to practice (speak)English every day.7.She is used to (play)the piano after supper.8.This film is worth (see).9.I remember (see)this girl somewhere in Shanghai.10.I cant go with you,because I have a lot of things to do.(A)swimming (B)to swim (C)swim (D)to swimming 参考答案 一、1 to help 2.watching 3.laughing 4.to lend 5.to cut 6.speaking 7.playing 8.seeing 9.seeing(表示曾经见到过)10.cut 11.think(but前有 do动词，but后的不定式省 to)12.to have 二、1.(A)2.(B)3.(C)4.(B)5.(D)6.(C)7.(D)(clever,foolish,kind等词作表语时，表语后的代词或名词前用 of)8.(A)9.(D)10.(A)
