2.疑问副词用在句首。 How long have you been staying in America? 你在美国待多久了?
3.疑问副词在句中引导名词子句。 I want to know where she has gone. 我想知道她去哪里了。
4.疑问副词后接不定词构成的名词片语,在句中可以作主词、受词或主词补语。 How to solve the problem gives him a bad headache. 如何解决这个问题使他伤透脑筋。 (How to solve the problem作主词。) I don't know how to answer the question. 我不知道如何回答这个问题。 (how to answer the question作受词。) The patient is in urgent need the medicine, but the problem is where to get it. 这个病人急需这种药,但问题是哪里能找到。 (where to get it作主词补语。)
5.疑问副词引导的名词子句可作主词、受词或主词补语。 When we are to start the competition hasn't fixed yet. 我们什么时候开始比赛还没有定下来。 (When we are to start the competition作主词。) She asked her husband where he had been. 她问她丈夫去哪里了。 (where he had been 作受词。) The question is when we can finish our work. 问题是我们何时能完成我们的工作。 (when we can finish our work作主词补语。)
疑问代词与疑问副词的区别: 1. 疑问代词做对陈述句的主语,宾语或定语提问,即做句子的主语,宾语或定语,如what, who/ whom, whose. eg. Who is talking ? What can you see? Whose shirt is this? 2.疑问副词对时间,地点,方式等状语提问,如when, where, how 等. eg. When is your birthday? Where are you going? How do you know? 常见的疑问代词:what who which whom(只做宾语) 疑问副词:how where when 还有whether是疑问连接词。
并列连词连接两个或两个以上地位平等的字、词组或分句。例如: (1) Air and water are indispensable to me. (2) She likes going out with friends or playing outdoor games. (3) Most workers have a good income, so they look very happy.
从属连词连接两个或两个以上的分句,形成复杂句中的从属分句。例如: (4) He said that he did not want to go . (5) Many things have happened since I last saw him. (6) You may come if you want to.
从属连词用来连接各种从句。 until(till)直到,在用until表达时间状语的句子中,主句中的动词是要十分小心去选择的。 如动词是持续行动词,它要用肯定句,如: I studied hard until 12 o'clock last night. 如果动词是瞬间截止性动词,则要用否定句,如: He didn't go to bed until his mother came back. 由since,for,by,before, 来引导的时间状语从句。 since 引导的时间状语是动作的开始时间,如: I have studied English since 1990. 而by引导的时间状语通常是动作的结束时间,如: I had learned 25 English songs by the end of last term.
从属连词语法分类:
种类
语法作用
连词举例
从属连词
引导原因状语从句
Because, since
引导条件状语从句
If, unless, as long as
引导目的状语从句
So that
引导结果状语从句
So…that
引导方式状语从句
As, just as, as if
引导让步状语从句
Though, although, even though, no matter what, however, no matter how, whoever, no matter who, wherever, no matter where
引导比较状语从句
As…as, not so…as, than, less…than, the more…the more