原因状语从句,什么是原因状语从句
发布时间:2025-08-17 | 来源:互联网转载和整理
1,什么是原因状语从句
这句子里有两个从句,一个是who引导的定语从句,另一个是wherever引导的是让步状语从句。句中不定式to weak up做主句的状语,但不是从句有原因的就是原因状语从句,一般由because、because of 引导;有关系到时间词的为时间状语从句,一般由when、while 引导。2,甚么叫缘由状语从句
状语从句 (Adverbial Clause) 状语从句指句子用作状语时,起副词作用的句子。它可以修饰谓语、非谓语动词、定语、状语或整个句子。根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。状语从句一般由连词(从属连词)引导,也可以由词组引起。从句位于句首或句中时通常用逗号与主句隔开,位于句尾时可以不用逗号隔开。3,什么是原因状语从句
由becayuse或者why引导的句子!原因状语从句要点: 由连词because, since, as引导, 也可由for, now that 等词引导1.I didnt go to school yesterday because I was ill.我昨天没去上学,因为我生病了。2. Since everybody is here, lets begin our meeting.既然大家都来了, 让我们开始开会吧.3. As you are in poor health, you should not stay up late.既然你身体不好, 你就不该熬夜.4.I asked her to stay to tea, for I had something to tell her.我请她留下来喝茶,因为我有事要告诉她..难点——because , since , as , for,辨析1) because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。 I didnt go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2) 由because引导的从句如果放在句末,且前面有逗 号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。 He is absent today, becaus e / for he is ill. He must be ill, for he is absent today.