(1)左边的some、any、every、no与右边的body、one、thing构成不定代词,some、any、every、no与右边的疑问副词where构成不定副词;
(2)一般情况下以some开头的不定代词和不定副词用于肯定句,以any开头的不定代词和不定副词用于否定句、疑问句;以no开头的不定代词和不定副词表示否定含义(no one为两个单词);
(3)不定代词或不定副词和形容词连用时,形容词放在后面。
He has something important to do.他有重要的事情要做。(肯定句用something,形容词important放后)
Did you buy anything special? (一般疑问句用anything,形容词special放后)
Did you go anywhere interesting last month?上个月你去令人感兴趣的地方了吗?
(一般疑问句用不定副词anywhere,形容词interesting放后)
(4)不定代词和不定副词做主语时,后面的动词用单数形式。Everone is here today.今天每个人都在这里。
1. 由连接代词 who, whom, whose, what, which 等引导,不能省略。例如:
Do you know who he is?
2. 由连接副词 how, where, when, why 引导, 也不可省略。例如:
I don't know where I can buy this kind of camera.
3. 宾语从句用陈述句语序,即:连接词 + 主语 + 谓语 + 其他。
4. 主句与从句的时态关系:
(1) 如果主句是一般现在时,从句可以是根据情况所需要的任何时态。例如:
I don't know when she came here.
Can you tell me when he will come here?
(2) 如果主句是过去的时态,从句也应用过去时态的某一种。但若从句是表示客观事实或真理时,从句时态不受主句时态的限制,应用一般现在时。例如:
He told us why he would stay at home the next day.
The teacher explained how the earth goes around the sun.
5. 某些由连接代词或连接副词引导的宾语从句可改为含“特殊疑问词 + 动词不定式”结构的简单句。例如:
Can you tell me where I can buy this book?
Can you tell me where to buy this book?