高中英语句型归纳

　　1. be doing/ be about to do/ had done…, when…(when：这时, 强调一个动作的突然发生)

　　1). I was walking along the river, when I heard a drowning boy cry for help.

　　2). I was about to leave when it began to rain.

　　3). I had just finished my test paper when the bell rang, announcing the exam was over.

　　2. It was (not ) + 时间段+before +一般过去时 过了一段时间就……..

　　It will (not )be+ 时间段+before +一般现在时 要过一段时间才会…

　　It is/ has been +时间段+ since…..

　　It was +点时间+ when…..

　　It was +时间状语+ that …..(强调句)

　　1). It was not long before he sensed the danger of the position.不久他就意识到他处境危险(动作已发生)

　　2). It will be half a year before you graduate from the school. 还有半年你才从这个学校毕业(动作未发生)

　　3). It is 3 years since he worked here.=he left here.(since从句中的谓语动词若是延续性动词，要从这个动作结束的时候算起)

　　4). It was 3 o’clock when they received the telephone.

　　5) It was at 3 o’clock that they received the telephone.

　　3. no 比较级 than: A 与B都不……… /仅仅，只有

　　not比较级 than: A 不如B / 不超过，至多

　　more……… than……… 与其….倒不如……(= not as/ so……..as……)

　　more than=not only 不仅仅……..

　　1). He works no harder than I.他和我都不用功

　　2). He doesn’t work harder than I.他不如我用功

　　3). There are no more than seven people in the room. 屋里仅有七个人

　　4). There are not more than seven people in the room. 屋里至多有七个人

　　5). He is more diligent than clever. 与其说他聪明，倒不如说他勤奋

　　à He is not as/ so clever as diligent.

　　6)It is more like a meeting than like a party.--> It is not as a party as a meeting

　　7).Mr. Zhang is more than my teacher, he is also my best friend.张先生不仅仅是我的老师，他还是我的朋友

　　4. once…..一旦….., 表示时间和条件

　　1)Once you understand what the teacher explained, you will have no difficulty doing the work.

　　2). Once yo