1)通常，现在分词表示主动，过去分词表示被动，例如：He is the man giving you the money. (= who gave you) 他就是给你钱的那个人。He is the man stopped by the car.( = who was stopped by)他就是那个被车拦住的人。2)不及物动词的过去分词表示动作已经发生gone, fallen, retired,...

(一)： 独立主格结构的构成：名词(代词)+现在分词、过去分词;名词(代词)+形容词;名词(代词)+副词;名词(代词)+不定式;名词(代词) +介词短语构成。(二) 独立主格结构的特点：1)独立主格结构的逻辑主语与句子的主语不同，它独立存在。2)名词或代词与后面的分词，形容词，副词，不定 式，介词等是主谓关系。3)独立主格结构一般有逗号与主句分开。举例：The test finished, we ...

表伴随时，既可用分词的独立结构，也可用with的复合结构。with +名词(代词)+现在分词/过去分词/形容词/副词/不定式/介词短语举例: He stood there, his hand raised.= He stood there, with his hand raise.典型例题The murder was brought in, with his hands ___ behind hi...

1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。时间状语： every , sometimes, at , on SundayI leave home for school at 7 every morning.2) 客观真理，客观存在，科学事实。The earth moves around the sun.Shanghai lies in the east of China.3) 表示...

1)在确定的过去时间里所发生的动作或存在的状态。时间状语有：yesterday, last week, an hour ago, the other day, in 1982等。Where did you go just now?2)表示在过去一段时间内，经常性或习惯性的动作。When I was a child, I often played football in the street.Whe...

used to + do："过去常常"表示过去习惯性的动作或状态，但如今已不存在。Mother used not to be so forgetful.Scarf used to take a walk. (过去常常散步)be used to + doing： 对……已感到习惯，或"习惯于"，to是介词，后需加名词或动名词。He is used to a vegetar...

1) shall用于第一人称，常被will 所代替。will 在陈述句中用于各人称，在争求意见时常用于第二人称。Which paragraph shall I read first.Will you be at home at seven this evening?2) be going to +不定式，表示将来。a. 主语的意图，即将做某事。What are you going to do to...

用于条件句时， be going to　表将来will　表意愿If you are going to make a journey, you'd better get ready for it as soon as possible.Now if you will take off your clothes, we will fit the new clothes on you in fr...

be to 表示客观安排或受人指示而做某事。be going to 表示主观的打算或计划。I am to play football tomorrow afternoon. (客观安排)I'm going to play football tomorrow afternoon. (主观安排)更多小升初资料分享，尽在查字典小学网！

1)下列动词：come, go, arrive, leave, start, begin, return的一般现在时表将来。这主要用来表示在时间上已确定或安排好的事情。The train leaves at six tomorrow morning.When does the bus star? It stars in ten minutes.2)倒装句，表示动作正在进行，如：Here comes...

1)过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作;现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。2)过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。一般过去时的时间状语:yesterday, last week，…ago, in1980, in October, just now, 具体的时间状语共同的时间状语:th...

1)It is the first / second time . that 结构中的从句部分，用现在完成时。It is the first time that I have visited the city.It was the third time that the boy had been late.2)This is the that 结构，that 从句要用现在完成时.This is t...

Since 用来说明动作起始时间，for用来说明动作延续时间长度。I have lived here for more than twenty years.I have lived here since I was born..My aunt has worked in a clinic since 1949.Some new oilfields have been opened up since...

1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980, last month, half past six)。I have been here since 1989.2) since +一段时间+ agoI have been here since five months ago.3) since +从句Great changes have taken place since...

　1) 用于完成时的区别延续动词表示经验、经历; 瞬间动词表示行为的结 果，不能与表示段的时间状语连用。He has completed the work.他已完成了那项工作。 (表结果)I've known him since then.我从那时起就认识他了。(表经历)2)　用于till / until从句的差异延续动词用于肯定句，表示"做……直到&helli...