七年级 U1-U3 语法知识复习以及语法选择专题训练知识点：不定冠词和定冠词的基本用法规律特殊疑问句复习一般现在时复习There be 句型复习一、不定冠词和定冠词：1、不定冠词： a, an 表示一个，相当于one， a用在以辅音字母开的可数名词单数，an 只用在以元音字母开始的可数名词单数。2、当句子或文章中第一次提到某个事物时，用不定冠词a 或者 an 表示一个：Eg： There is a cat on the tree, the cat is mine. 3、定冠词： the 当句子或文章中第二次以上提到某个事物时，用the 表示同一件事I have a pen, the pen is red. 如果事物是大家都知道的，那第一次提到也用the Do you know the boy over there? 世界上唯一的天体前用the The Sun is far away from us. 乐器前用 the，运动前不用the Linda doesn't like playing football, she likes playing the piano. 记住部分固定搭配I will meet you in the afternoon. in the morning, in the evening, in the classroom...... 序数词前要用the the first, the second... 注意 the 的读音：在以元音开头的单词读/ei/，在以辅音开头的单词前读/ e? / 二、特殊疑问句复习1、特点：以特殊疑问词开始，并且要用句子回答2、结构：特殊疑问词+一般疑问句Eg: 1.--What colour do you like best? --I like blue best. 特殊疑问词：what when where which who whose why how how many how much how far how long 意为“多久、多长时间”,主要是对一段时间进行提问,答语通常是（for）three days/weeks/months等时间段 ,它可用于各种时态. Eg: How long do you stay in Beijing every year? How long have they lived here? — How long were you not at school last year? — About two weeks. how soon 意为“还要多久”,是对从某个基本时间到将来某动作结束或某动作发生这段时间提问,常用在一般将来时态的句子中,其答语通常是“ in + 一段时间” . Eg: — How soon can you finish the work? — In half an hour. how often 意为“多久⋯⋯次、是否经常”,用来提问在某一特定的时间进行某个动作的次数,答语通常是 always, usually, often, sometimes, once/twice a day/month 等. Eg: — How often do you ...
