Read by critical thinking 1.They suppress their guilt since they believe that their work will benefit everyone in the long run.(Para.2,Line 8-10) 句子分析 Since和because、.for一样可以引导原因状语 从句，表“因为”；他们的用法差别和例句 见下表：
T 1. They suppress their guilt since they believe that their work will benefit everyone in the long run. (Para. 2, Line 8-10) 句子分析 Since 和because、for 一样可以引导原因状语 从句，表“因为”；他们的用法差别和例句 见下表：
Read by critical thinking Since/because/for的用法 用法 例句 Becausei语气最强，只有它才 We dislike him because 能用来回答why的问句，所引 he is an ill-tempered 出的原因为往往是听话人所不 person. 知道的或最感兴趣的原因 Since表人们已知的事实，不 Since you are an 须强调的原因。置于句首时常 English major,I guess 译成“既然” you can help me with this sentence. Fo表示推断的理由，是对前 It rained last night,for 面分句的内容加以解释或说明 the ground was wet this ,不能置于句首。 morning
T 用法 例句 Because语气最强，只有它才 能用来回答why的问句，所引 出的原因为往往是听话人所不 知道的或最感兴趣的原因 We dislike him because he is an ill-tempered person. Since表人们已知的事实，不 须强调的原因。置于句首时常 译成“既然”。 Since you are an English major, I guess you can help me with this sentence. For表示推断的理由，是对前 面分句的内容加以解释或说明 ，不能置于句首。 It rained last night, for the ground was wet this morning. Since/because/for的用法
Read by critical thinking EXERCISE Please fill in the blank with because,since and for. 1.My mother must be waiting for me in the living room,for the light there is still on. 2.The manager didn't attend the meeting yesterday,because he caught a severe cold. 3.Since you have been to Europe three times, can you be my guide?
T 1. My mother must be waiting for me in the living room, _____ the light there is still on. 2. The manager didn’t attend the meeting yesterday, ________ he caught a severe cold. 3. _______ you have been to Europe three times, can you be my guide? Please fill in the blank with because, since and for. for because Since EXERCISE
Read by critical thinking 2.All too often,however,the mothers arrive home exhausted and face the immediate task of preparing dinner.(Para 3,Line 7-9) 译文 然而十分常见的情况是： 母亲们回到家里已经疲惫不堪， 又面临着一个紧迫的任务一做饭
T 2. All too often, however, the mothers arrive home exhausted and face the immediate task of preparing dinner. (Para 3, Line 7-9) 译文 然而十分常见的情况是： 母亲们回到家里已经疲惫不堪， 又面临着一个紧迫的任务––––做饭
Read by critical thinking 2.All too often,however,the mothers arrive home exhausted a and face the immediate task of preparing dinner.(Para 3,Line 7-9) 句子分析 在这个句子中，“exhausted”是过去分词作 形容词用，表示伴随状况。过去分词和现在 分词都可用于类似的结构。e.g. 1.He came home very much depressed. 2.He is lying at home sick
T 2. All too often, however, the mothers arrive home exhausted and face the immediate task of preparing dinner. (Para 3, Line 7-9) 在这个句子中，“exhausted” 是过去分词作 形容词用，表示伴随状况。过去分词和现在 分词都可用于类似的结构。e.g. 1. He came home very much depressed. 2. He is lying at home sick. 句子分析