真实条件句
- 阅168真实条件句用于陈述语气，假设的情况可能发生，其中 if 是如果的意思。 时态关系 句型： 条件从句 主句 一般现在时 shall/will + 动词原形 If he comes, he will bring his violin. 典型例题 The volleyball match will be put off if it ___. A. will rain......
比较until和till
- 阅188此两个连词意义相同。肯定形式表示的意思是做某事直至某时，动词必须是延续性的。否定形式表达的意思是直至某时才做某事。动词为延续性或非延续性都可 以。 正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。 肯定句： I slept until......
关系代词that 的用法
- 阅21)不用that的情况 a) 在引导非限定性定语从句时。 The tree, that is four hundred years old, is very famous here. b) 介词后不能用。 We depend on the land from which we get our food. We depend on the land that/which we get our food from. 2) 只......
比较and和or
- 阅1391) 并列结构中，or通常用于否定句，and用于肯定句。 2) 但有时and 也可用于否定句。请注意其不同特点： There is no air or water in the moon. There is no air and no water on the moon. 在否定中并列结构用or 连接，但含有两个否定词的句子实际被看作是......
引导名词性从句的连接词
- 阅149引导名词性从句的连接词可分为三类： 连接词：that,whether,if 不充当从句的任何成分) 连接代词：what, whatever, who, whoever, whom, whose, which. 连接副词：when, where, how, why 不可省略的连词： 1. 介词后的连词 2. 引导主语从句和同位语从句的连词......
if, whether引导的名词从句
- 阅581)yes-no型疑问从句 从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，其功能和wh-从句的功能相同， 例如： 主语：Whether the plan is feasible remains to be proved. 这一计......
表示＂一…就…＂的结构
- 阅88hardly/scarcelywhen/before, no soonerthan 和as soon as都可以表示一就的意思，例： I had hardly / scarcely got home when it began to rain. I had no sooner got home than it began to rain. As soon as I got home, it began to rain. 注意： 如果ha......
让步状语从句
- 阅101though, although 注意 ： 当有though, although时，后面的从句不能有but，但是 though 和yet可连用 Although its raining, they are still working in the field. 虽然在下雨，但他们仍在地里干活。 He is very old, but he still works very hard. 虽然他......
关系副词引导的定语从句
- 阅102关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。 1)when, where, why 关系副词when, where, why的含义相当于介词+ which结构，因此常常和介词+ which结构交替使用，例如： There are occasions when one must yield. 任何人都有不得不屈......
the + 最高级 + 比较范围
- 阅1311) The Sahara is the biggest desert in the world. 形容词最高级前通常必须用定冠词 the，副词最高级前可不用。 形容词most前面没有the，不表示最高级的含义，只表示非常。 It is a most important problem. =It is a very important problem. 注意： 使用......
begindoing/to do
- 阅119begin / start to do sth begin / start doing sth. 1) 谈及一项长期活动或开始一种习惯时，使用doing. How old were you when you first started playing the piano? 你几岁时开始弹钢琴? 2) begin, start用进行时时，后面动词用不定式to do I was beginnin......
分词作状语
- 阅101As I didnt receive any letter from him, I gave him a call. - Not receiving any letter from him, I gave him a call. 由于没有收到他的信，我给他打了电话。 If more attention was given, the trees could have grown better. - Given more attention......
比较级形容词或副词 + than
- 阅36You are taller than I. They lights in your room are as bright as those in mine. 注意： 1)要避免重复使用比较级。 He is more cleverer than his brother. He is more clever than his brother. He is clever than his brother. 2)要避免将主语含在比较......
非谓语动词
- 阅133在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式，动名词，和分词。 1)不定式 时态语态 主动 被动 一般式 to do to be done 完成式 to have done to have been done 2)动名词 时态语态 主动 被动 一般式 doing be......
和more有关的词组
- 阅321) the more the more 越就越 The harder you work，the greater progress youll make. 2) more B than A 与其说A不如说B less A than B He is more lazy than slow at his work. = He is less slow than lazy at his work. 3) no more than 与一样，不比多......
forget doing/to do
- 阅57forget to do 忘记要去做某事。 forget doing 忘记做过某事。 The light in the office is stil on. He forgot to turn it off. 办公室的灯还在亮着，它忘记关了。 He forgot turning the light off. 他忘记他已经关了灯了。 Dont forget to come tomorrow.......
助动词should,would的用法
- 阅1551)should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称，例如： I telephoned him yesterday to ask what I should do next week. 我昨天给他打电话，问他我下周干什么。 比较： What shall I do next week? I asked. 我下周干什......
不定式主语
- 阅511) Its easy to do that.我做这事太容易了 easy, difficult, hard, important, possible, impossible, comfortable, necessary, better; the first, the next, the last, the best, too much, too little, not enough Its so nice to hear your voice. 听到......
动词不定式的否定式
- 阅237Tell him not to shut the window She pretended not to see me when I passed by. 我走过的时候，她假装没看见。 典型例题 1)Tell him ___ the window. A. to shut not B. not to shut C. to not shut D. not shut 答案：B。 tell sb to do sth 的否定形式......
不定式作状语
- 阅701)目的状语 To only to , in order to, so as to, so as to He ran so fast as to catch the first bus. 他飞快地跑以便赶上第一班车。 I come here only to say good-bye to you. 我来仅仅是向你告别。 2)作结果状语，表事先没有预料到的，要放在句子后面。......