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冠词语法知识归纳

  (4)从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词。

  twenty-first,two hundred and forty-fifth

  基数词转为序数词的口诀:

  基变序,有规律,词尾加上-th.

  一,二,三,特殊记,词尾字母t,d,d.

  八去t,九去e, ve要用f替。

  ty将y变成i,th前面有个e.

  若是碰到几十几,前用基来后用序。

  六、介词:常用介词:in, on, at, behind等

  1.at表示时间概念的某一个点。(在某时刻、时间、阶段等)。

  at 1:00(dawn,midnight,noon)在一点钟(黎明、午夜、中午)

  2.on

  1)表示具体日期。

  注:(1)关于“在周末”的几种表示法:

  at(on)the weekend在周末---特指

  at(on)weekends在周末---泛指

  over the weekend在整个周末

  during the weekend在周末期间

  (2)在圣诞节,应说at Christmas而不说on Christmas

  2)在(刚……)的时候。

  On reaching the city he called up his parents.

  一到城里他就给父母打了一个电话。

  3.in

  1)表示“时段”、“时期”,在多数情况下可以和during互换,前者强调对比,后者强调持续。 in(during)1988(December,

  the 20th century)在一九八八年(十二月、二十世纪)

  七、动词:动词的四种时态:

  (1)一般现在时:

  一般现在时的构成

  1. be动词:主语+be(am, is, are)+其它。如:I am a boy. 我是一个男孩。

  2. 行为动词:主语+行为动词(+其它)。 如: We study English. 我们学习英语。

  当主语为第三人称单数(he, she, it)时,要在动词后加“-s”或“-es”。如:Mary likes Chinese.玛丽喜欢汉语。

  动词+s的变化规则

  1.一般情况下,直接加-s,如:cook-cooks, milk-milks

  2.以s. x. sh. ch. o结尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes

  3.以“辅音字母+y”结尾,变y为i, 再加-es,如:study-studies

  (2)一般过去时:

  动词过去式详解 动词的过去式的构成规则有:

  A、规则动词

  ① 一般直接在动词的后面加ed:如worked , learned , cleaned , visited

  ②以e结尾的动词直接加d:如lived , danced , used

  ③ 以辅音字母加y结尾的动词要改y为i再加ed(此类动词较少)如study – studied carry – carried worry –

  worried (注意play、stay不是辅音字母加y,所以不属于此类)

  ④ 双写最后一个字母(此类动词较少)如stopped

  B、不规则动词(此类词并无规则,须熟记)小学阶段要记住以下动词的原形和过去式:sing – sang , eat – ate ,

  see – saw , have – had , do – did , go – went , take – took , buy – bought , get – got , read – read

  ,fly – flew , am/is – was ,

  are – were , say – said , leave – left , swim – swam , tell – told , draw – drew , come – came , lose

  – lost , find – found , drink – drank , hurt – hurt , feel – felt

  (3)一般将来时:

  基本结构: ①be going to + do;

  ②will+ do. be going to = will

  I am going to go swimming tomorrow(明天). = I will go swimming tomorrow.

  (4)现在进行时: am,is,are+动词现在分词

  动词现在分词详解 动词的ing形式的构成规则:

  ① 一般的直接在后面加上ing , 如doing , going , working , singing , eating

  ② 以e 结尾的动词,要先去e再加ing,如having , writing

  ③ 双写最后一个字母的(此类动词极少)有:running , swimming , sitting , getting

  第三部分:句法

  1.陈述句

  (1)肯定句:是指用肯定的语气来陈述的句子,如:I’m a student. She is a doctor. He works in a hospital.

  There are four fans in our classroom. He will eat lunch at 12:00. I watched TV yesterday evening.

  (2)、否定句:含有否定词或表示否定意义词的句子,如:I’m not a student. She is not (isn’t) a doctor.

  He does not (doesn’t) work in a hospital. There are not (aren’t) four fans in our classroom.