风吹散了心
学好英语的语法是相当重要的。下面是我收集整理的 八年级 英语语法知识以供大家学习。
八年级英语语法知识(一)
动词形态不对应
下面两则 广告 中的第二个动词形态就和前面的不对应，因此属于一种字形上的错误：
① If you intend to buy or sell your property or having any queries, please feel free to call me .
② You will be in charge of interviewing and shortlisting candidates and to assist in the recruitment of 500 staff.
在第一句里的“having”应改为“have”才对。不然，就要把这个分句完全写出来：
“…… or if you have any queries, ……”
第二句里的“and”是衔接前面的动名词“interviewing and shortlisting”和后面的动名词“assisting”。显然，这里不用动名词而用不定式动词“to assist”，也是犯了动词形式不对应的错误，非改正不可。
还有，根据字词的排列，“shortlisting”要排在“ interviewing”前面，才合逻辑。
①和②这类的错误相当普遍。虽然这样的错误不会影响人们对 文章 的理解，但是总不是件文字上的好事，还是多多注意，尽量避免好。
同样的，下列5个从学生作业中找出来的 句子 ，也犯了同样的毛病：
③ This will enable the parent to experience the new style of life and allows him or her enough time to consider settling down.
④ Utopianism violates the human conscience, denies privacy to individuals and discard human rights.
⑤ They have to reach a decision on either sending their child to a day-care centre or employ a maid.
⑥ It is very hard to relate the stories through other means and at the same time retains the critical aspects of the book.
⑦ This problem can be solved by developing correct language skills, concentrating on studies day by day, and try not to exert too much pressure.
③到⑦句子里的动词形态的错误是明显的，改正也是容易的，即：
③ allow; ④ discards; ⑤ employing; ⑥ retain; ⑦ trying.
八年级英语语法知识(二)
英语多义词
由于一词多义在英语词汇的运用上非常重要，这里不厌其烦地再举一个家喻户晓的常用字 break，以加强我对这点的重视。
作为动词，break 有下列 12 个常用意思：
① 打破、断，如：(a)If you drop the cup, you will break it. (b)The rope suddenly broke.
② 违反、违约，如：(a)Don't break the law. (b)Tom is notorious for breaking promises.
③ 伤、毁，如：(a)Tony broke Jane's heart by not marrying her. (b)Judy dropped her watch and broke it.
④ 中断、打断，如：(a)The barking of the dog broke our sleep. (b)The stranger rushed in and broke our conversation.
⑤ 破晓，如：They arrived at the airport just as the day was breaking.
⑥ 放弃，如：It is hard to break the habit of smoking.
⑦ 开路，如：We sometimes saw voluntary workers help break paths in villages.
⑧ 毫无得失，如：He bought the sewing machine at $700 and sold it at the same price. He broke even on the deal.
⑨ 闯入，如：A thief broke into my neigbour's house and ran away with some valuables.
⑩ 爆发，如：If a new world war breaks out, can you imagine the consequences?
11. 突破，如：The soldiers tried to break through the enemy's line.
12. 停止，如：The meeting suddenly broke up.
当名词时，break 有 5 个常见义，如下：
① 裂口：Please send for a plumber to repair the break in the water pipe.
② 拂晓：Fish mongers start work at the break of the day.
③ 吃茶点时间：A few of us have a tea-break at 11am every day.
④ 休息：There is one-hour break for lunch.
⑤ 变动：The bankrupt man has a break in his way of living.
八年级英语语法知识(三)
动词主语别忘了呼应
根据英语语法规律，形容词分句(也叫定语从句，adjective clause)里的动词必须和主句里的先行词(antecedent)呼应。先行词是单数，形容词分句中的动词便是单数;先行词是复数，形容词分句中的动词便是复数。例如：
① Do you know the woman who is walking the dog?(陪狗散步)
② Those who have performed well in the tournament will be rewarded.
在①里，先行词the woman是单数，形容词分句里的动词is也是单数。反之，②里的先行词those是复数，who后面的动词也是复数have.
根据这原则，who is upgrading 中的is便要改为are了。
动词与主语不呼应的错误比比皆是。除了上述例子外，常见的错误还有下面几种类型：
③Has Mr and Mrs Li decided to emigrate?
④Do your uncle live in Malaysia?
⑤There is several beautiful paintings on the wall.
⑥The news of Henry's resignation were received with great surprise.
⑦What we are doing are good for the nation as a whole.
⑧Someone have forgotten to turn off the light.
在③里，助动词 has 和复数主语 Mr and Mrs Li 不符，要改为 have.第④句里的 do 和 your uncle 不搭配，要改为 does.第⑤ 句里的 is 和真正主语 paintings 的数不一致，应改为 are.这个句子也可改变为：“Several beautiful paintings are on the wall”。在⑥里的主语 news，其形式是复数，但意思是单数，动词也要单数的 was received 才行。⑦里的主语是名词分句(noun clause)，是个单数的单位，动词也要单数的 is，不是 are.在⑧ 里的主语 someone 是单数代名词，随后的动词必须是 has forgotten 才对。
上述动词和主语不一致的毛病，屡见不鲜;即使英语能力好的人，也难幸免。
下面这句英语很好，但是里面的动词对吗?是 has 还是 have 呢?
“Its unique concept and impressive magnitude has made it the talking point of the region.”
既然这句的主语是由 concept 和 magnitude 组成，便是复数，谓语动词当然也要复数 have 才是。
boboyoung1983
初二英语语法，是初一语法到初三语法的过渡点。下面是我给大家整理的初二英语语法的相关知识，供大家参阅!
一般现在时
1.概念：经常、反复发生的动作或行为及现在的某种状况。
2.时间状语： Always, usually, often, sometimes, every week (day, year, month„), once a week(day, year, month„), on Sundays,
3.基本结构：动词 原形 (如主语为第三人称单数，动词上要改为第三人称单数形式)
4.否定形式：主语+am/is/are +not+其他; 此时态的谓语动词若为行为动词，则在其前加don't, 如主语为第三人称单数，则用doesn't，同时还原行为动词。
5.一般疑问句：把be动词放于句首;用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。
6.例句：It seldom snows here.这里很少下雪。
He is always ready to help others.他总是乐于帮助别人。
Action speaks louder than words.事实胜于雄辩。
二、 一般过去时
1.概念：过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为。
2.时间状语：ago, yesterday, the day before yesterday, last week, last(year, night, month„), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc.
3.基本结构：主语+动词或be的过去时+名词
4.否定形式：主语+was/were +not+其他;在行为动词前加didn't，同时还原行为动词。
5.一般疑问句：was或were放于句首;用助动词do的过去式did 提问，同时还原行为动词。
6.例句：She often came to help us in those days.那些天她经常来帮助我们。
I didn't know you were so busy.我不知道你是这么忙。
三、 一般将来时
1.概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。
2.时间状语：Tomorrow, next day(week, month, year„),soon, in a few minutes, by„,the day after tomorrow, etc.
3.基本结构：主语+am/is/are +going to + do+其它;主语+will/shall + do+其它
4.否定形式：主语+am/is/are not going to do ;主语+will/shall not do+其它
5.一般疑问句：be放于句首;will/shall提到句首。
6.例句：They are going to have a competition with us in studies.他们将有一场比赛和我们一起研究。
It is going to rain.天要下雨了。
四、 一般过去将来时
1.概念：立足于过去某一时刻，从过去看将来，常用于宾语从句中。
2.时间状语：The next day (morning, year„),the following month(week„),etc.
3.基本结构：主语+was/were +going to + do+其它;主语+would/should + do+其它
4.否定形式：主语+was/were+not + going to + do; 主语+would/should + not + do.
5.一般疑问句：was或were放于句首;would/should 提到句首。
6.例句：He said he would go to Beijing the next day.他说他第二天要去北京。
I asked who was going there.我问，谁要去那里。
五、 现在进行时
1.概念：表示现阶段或说话时正在进行的动作及行为。
2.时间状语：Now, at this time, days, etc. look. listen
3.基本结构：主语+be +doing +其它
4.否定形式：主语+be +not +doing+其它
5.一般疑问句：把be动词放于句首。
6.例句：How are you feeling today?你今天感觉如何?
He is doing well in his lessons.在课上他表现得很好。
六、 过去进行时
1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。
2.时间状语：at this time yesterday, at that time或以when引导的谓语动词是一般过去时的时间状语等。
3.基本结构 主语+was/were +doing +其它
4.否定形式：主语+was/were + not +doing+其它
5.一般疑问句：把was或were放于句首。(第一个字母大写)
6.例句：At that time she was working in a PLA unit.那段时间她在人民解放军部队工作。 When he came in, I was reading a newspaper.他进来时，我正在读报纸。
七、 将来进行时
1.概念：表示将来某一时间正在进行的动作，或表示要在将来某一时间开始，并继续下去的动作。常用来表示询问、请求等。
2.时间状语：Soon, tomorrow, this evening，on Sunday, by this time，in two days, tomorrow evening
3.基本结构：主语+shall/will + be +现在分词+其它
4.否定形式：主语+shall/will + not + be +现在分词+其它
5.例句：This time next day they will be sitting in the cinema.下一天的这个时间，他们正坐在电影院。
He won’t be coming to the party.他不去参加聚会了。
八、 过去将来进行时
1.概念：表示就过去某一时间而言,将来某一时刻或某一段时间正在进行的动作,主要用于宾语从句中,尤其多用于间接引语中。
2.基本结构：should/would + be +现在分词
3.例句：They said they would be coming.他们说了他们将要来。
He said he could not come because he would be having a meeting.他说他不能来因为要开会。
九、 现在完成时
1.概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。
2.时间状语：yet,already,just,never,ever,so far,by now,since+时间点，for+时间段，recently, lately, in the past few years, etc.
3.基本结构：主语+have/has +p.p(过去分词)+其它
4.否定形式：主语+have/has + not +p.p(过去分词)+其它
5.一般疑问句：have或has。
6.例句：I've written an article.我已经写了一篇论文。
The countryside has changed a lot in the past few years.在过去的几年，农村发生了巨大的变化。
十、 过去完成时
1.概念：以过去某个时间为标准，在此以前发生的动作或行为，或在过去某动作之前完
成的行为，即“过去的过去”。
2.时间状语：Before, by the end of last year (term, month„), etc.
3.基本结构：主语+had + p.p(过去分词)+其它 4.否定形式：主语+had + not +p.p(过去分词)+其它
5.一般疑问句：had放于句首。
6.例句：As soon as we got to the station, the train had left.当我们到车站的时候,火车已经开走了。
By the end of last month. We had reviewed four books.到上个月底。我们有了四本书。 基本结构：主语+had+p.p(过去分词)+其它
①肯定句：主语+ had+p.p(过去分词)+其它
②否定句：主语+ had+ not+p.p(过去分词)+其它
③一般疑问句：Had+主语+p.p(过去分词)+其它
④特殊疑问句：特殊疑问词+一般疑问句
十一、 将来完成时
1.概念：在将来某一时刻之前开始的动作或状态
2.时间状语：by the time of; by the end of+时间短语(将来);by the time+从句(将来)
3.基本结构：主语+be going to/will/shall + have+p.p(过去分词)+其它
4例句:By the time you get back, great changes will have taken place in this area.到你回来的时候,就将发生巨大的变化。
十二、 过去将来完成时
1.概念：表示在过去某一时间对将来某一时刻以前所会发生的动作，常用在虚拟语气中，表示与过去的事实相反。
2.基本结构：should/would have done sth.
3.例句：I thought you'd have left by this time.我想这会儿你已经走了。
He told them he would have finished it by 8 o'clock.他告诉他们他会在8点以前干完。 十三、 现在完成进行时
1.概念：表示从过去某一时间开始一直延续到现在的动作。这一动作可能刚刚开始，也可能仍在继续，并可能延续到将来。
2.基本结构：主语+have/has +been +doing+其它
3.时间状语：since+时间点，for+时间段等。
4.例子：I have been sitting here for an hour.我已经在这里坐了一个小时。
The children have been watching TV since six o'clock.从6点起，孩子们一直看电视。 十四、 过去完成进行时
1.概念：表示某个正在进行的动作或状态，持续到过去某个时刻，还未完成，一直持续到之后的当前才结束。
2.基本结构：主语+ had + been + doing +其它
3.例子：She had been suffering from a bad cold when she took the exam.她在考试之前一直患重感冒。
Had they been expecting the news for some time?他们期待这个消息有一段时间了吧?
4.特殊含义：①尚未完成：He had been writing the novel.他已经在写小说了。(他没写完) ②企图：He had been studying the meaning of this proverb.他曾经学习过这个谚语。(他曾努力学习过它)
③未得结果：We had been studying what our enemy had said.我们一直致力于敌人所说的。(但是我们没有理解)
④最近情况：He had been quarrelling with his wife.他和他的妻子吵了一场架。(最近) ⑤反复动作：He had been asking me the same question.他一直问我相同的问题。(屡次) ⑥情绪：What had he been doing?他做了什么?(不耐烦)
十五、 将来完成进行时
1.概念：表示动作从某一时间开始一直延续到将来某一时间。是否继续下去，要视上下文而定。
2.基本结构：shall/will have been doing
3.例子：I shall have been working here in this factory for twenty years by the end of the year.到今年年底，我将在这个工厂工作20年了。
If we don't hurry up the store will have been closing before we get there. 咱们如不快一点儿，等我们到了那儿，店门就会关了。
