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When Dan knew he got depression，he was very upset and wanted 16. (give) up，but my father，his doctor，encouraged him to go on 17. (fight) against depression.My father said to him，“You have 18. wonderful life and three fine children.Take some time with them.It’s family that we live for—not just ourselves.Think of that 19. you will know life’s worth the fight.” His words touched me，and I 20. (sudden) realized that family are the most important in the world.I should spend more time staying with them. to give fighting a and suddenly 答案 返回 * * * * * * * * * * * * * * * * * (12)兼作连词和副词的介词。 ①after，since，till/until，before这些词既是介词，又是连词。 The children went home at once after school.(介词) They went to bed after they had finished the job.(连词) ②in，on，along，down，up，after，before，beyond等介词可兼作副词。 He ran down the hill.(介词) Can you lift that box down from the shelf for me？(副词) ③有的介词可以兼作连词和副词。 All the students got to school before me.(介词) We do want to buy something now before prices go up.(连词) Haven’t I seen you before？(副词) (13)介词的省略。 某些动词搭配中的介词可以省略。 Nothing can prevent me (from) doing the job. She spent nearly two hours (in) translating it. (14)某些名词与介词构成的固定搭配。 ①要求接to的名词有：key，answer，visit，entrance，apology，introduction，road等。 The key to success is preparation. ②要求接in 的名词有：interest，satisfaction，expert等。 He is an expert in teaching small children. 返回 介词在高考中的应用 ◆介词与语法填空 在语法填空中，介词是必考内容。常考表示方位、时间、地点、方式、原因、计量、材料等以及习惯用语中的介词。 典题试做1 在空白处填入适当的介词 1.For those who fly to Guilin，it’s only an hour away | 
