课件高中英语+状语从句+第11讲+since as because for.pptVIP

师说微课堂;专题: 状语从句;;because, as, for, since这几个词都是表示“原因”的连词， 语气由强至弱依次为：because→since→as→for ; because, since, as均为从属连词，引导原因状语从句； for 是并列连词，引导并列句。; 1、 because表示事情发生的直接原因或理由，它的语气很强。 I missed the train because I got up late. I stayed at home because it rained. 1)回答why的提问,必须用because。 — Why didnt he come yesterday? — ________ he was ill. A．Because B．As C．Since D．For ; 2) 在强调原因状语从句时，只能用because。 It was because it rained hard that they put off the football match. 3)because 不能与so连用。 4)because+ 从句；because of+ 名词短语 I came back because it was raining heavily. I came back ___________ ______ the heavy rain. ;since;;;1) The ship changed its course because there was a storm. The ship changed its course _________ _______ the storm. 2) Because he was ill, he didn’t go to school. He was ill, __________ he didn’t go to school. 3) He couldnt walk because his leg was broken. He couldn‘t walk ___________ ______ his broken leg. ;注意：for所引导的分句只能放在句子后部或单独成为一个句子，引导 的从句一般不放在句子的开头。 　　;知识应用;知识用; because since as for的用法区别;一样的知识 不同的视角