有知识不等于有智慧，知识积存得再多，若没有智慧加以应用，知识就失去了价值。了解你自己在做什么事，知道热爱做什么样的事，知道能把什么事做成什么样，这就是智慧。下面给大家分享一些关于人教版八年级下册英语第八单元小结，希望对大家有所帮助。
人教版八年级下册英语第八单元1
【语法讲解】
现在完成时 (Present Perfect Tense)
(1)表示过去发生或已经完成的动作对现在造成的影响或结果。
—It’s so dark. 太黑了。
—Someone has turned off the light. 有人把灯关上了。
(2)表示从过去某一时间开始并一直持续到现在的动作或状态。
常与since+过去的时间点，for+一段时间，since+时间段+ego, so far等时间状语连用。
Eg. I have lived here for ten years.我已经住在这里23年了。(从23年前开始，持续到现在还住这儿)
Eg. I have lived here since 2003. 自从2003年我就住在这儿。(从2003年开始，持续到现在还住这儿)
(3) 基本结构及句型转换：主语+have/has+过去分词(done) (当主语是第三人称单数has,其余人称用have。)
①肯定句：主语+have/has+过去分词+其他 I have finished my homework. (肯定句)
②否定句：主语+have/has+not+过去分词+其他 I have not finished my homework. (否定句)
③一般疑问句：Have/Has+主语+过去分词+其他
—Have you finished your homework?
—Yes, I have. / No, I haven’t, (一般疑问句及肯定、否定回答)
(4)has gone (to), has been (to), has been (in) 的区别
? Have/Has gone(to) :去了(现在不在说话现场)
Eg. ---Where is your father?
---He has gone to Shanghai.
? Have/Has been (to) :去过(已不在去过的地方)
Eg. My father has been to Shanghai.
? Have/has been in：呆了多久(还在所呆的地方)
Eg. My father has been in Shanghai for two months. =My father has been in Shanghai since two months ago.
(5)现在完成时的标志：
①常与just, already, yet, ever, never, before, so far 等连用，强调动作的完成，不强调动作的持续。
Have you ever been to Japan? I have just finished my homework.
②for + 时间段;since + 过去的时间点;since + 段时间 ago;since + 一般过去时的句子。
They have known each other for five years. Since he was a child, he has lived in England.
(6)动词过去式和过去分词的变化
规则变化： 1. 一般在动词词尾直接加ed。如：pick → picked → picked; wish → wished → wished; stay → stayed → stayed
2. 以不发音的e结尾的动词后面加d。如：like → liked → liked; hope → hoped → hoped; phone → phoned → phoned
3. 以―辅音字母 + y‖结尾的动词，变y为i，再加-ed。如：study → studied → studied; hurry → hurried → hurried; reply → replied → replied
4. 词尾只有一个辅音字母的重读闭音节动词，要双写辅音字母，再加-ed。如：stop → stopped → stopped; clap → clapped → clapped
不规则变化：
5. 以不变应万变。如：let → let → let; put → put → put; read → read → read
6. 若中间有双写e，则去掉一个e，单词末尾再加t。如：
feel → felt → felt; keep → kept → kept; sleep → slept → slept
7. 结尾的字母d变t。如：lend → lent → lent; build → built → built; send → sent → sent
8. 变为以-ought或-aught结尾。如：buy → bought → bought;
bring → brought → brought; catch → caught → caught; teach → taught → taught
人教版八年级下册英语第八单元2
【话题写作】
请你根据下表中所提供的信息以“Learn to express thanks”为题，用英语写一篇演讲稿。
背 景
1.认为上中学时吃好穿好是应该的;
2.走向社会后没有感恩意识。
学会感恩
1.感谢社会提供良好的教育机会;
2.感谢父母供养自己上学;
3.感谢老师传授知识;
4.感谢朋友的鼓励与帮助。
参考词汇：enter society 进入社会， sense of thanks 感恩意识， behavior 行为
要求：
1.短文应包括所提供的所有内容，可以适当发挥，不要简单翻译;
2.演讲稿中不得出现真实的人名、地名及能够透露你个人身份的信息;
3.词数：80词左右。开头和结尾已给出，不计入总词数。
参考范文：
Good morning, boys and girls!
The topic of my speech today is “Learn to express thanks”. We find some students want to eat well and wear fashionable clothes at school. When they leave school and enter society, they don’t know how to show any sense of thanks.
I think this behavior is not correct. As students, we should learn to express thanks. The society offers us a chance to receive good education. And our parents also support us to go to school. Our teachers teach us much knowledge, so we should thank them. We should also thank our friends because they can always give us courage and help.
In the future, we should never forget our society, parents, teachers and friends. At present, we should study harder to make our world more beautiful. Thank you for your listening!
人教版八年级下册英语第八单元3
重点句型解析
1. As soon as the man finish talking, Yu Gong said that his family…
as soon as意为“一……就……”，引导时间状语从句。例如：
Please call back as soon as you arrive home.
请你一到家，就给我回电。
I’ll write to you as soon as I get there.
我一到那儿就给你写信。
As soon as I went in, Katherine cried out with pleasure.
我一进门，Katherine 就高兴的叫起来。
【拓展】as soon as 引导的时间状语从句前后时态搭配：
(1) 主句为一般将来时，从句用一般现在时表示将来。例如：
He will come to my home as soon as he gets to Beijing.
他一到北京就来我家。
(2) 主句为一般过去时，从句也用一般过去时。例如：
He took out his English book as soon as he sat down.
他一坐下，就拿出他的英语书。
2. Finally, a god was so moved by Yu Gong that he sent two gods to take the mountains away.
so…that…引导结果状语从句，意为“如此……以至于……”，此句型中，so是副词，常用来修饰形容词或副词。常用句型为：主语+谓语+ so+ adj./adv. + that从句。例如：
Our teacher is so kind that all of us like him.
我们的老师是如此好心以至于我们都喜欢他。
He runs so fast that nobody in my class can catch up with him.
他跑得那么快，我们班没有人能追上他。
【拓展】“如此……以至于……”归纳：
(1) so + 形容词 + a/an + 单数名词 + that从句 = such + a/an + 形容词 + 单数名词+ that从句。例如：
It was so fine a day yesterday that we all went out for a picnic. = It was such a fine day yesterday that we all went out for a picnic.
昨天天气很好，我们都出去野餐了。
(2) such + 形容词 + 复数名词/不可数名词 + that从句。例如：
They are such good students that the teacher likes them.
他们都是很好的学生，老师喜欢他们。
It was such fine weather yesterday that we went swimming.
昨天天气很好，我们去游泳了。
(3)当that前的名词有表示数量多少的many, much, few, little等修饰时，只能用so，不能用such。例如：
There was so much noise outside that we couldn’t hear the teacher.
外面嘈杂声很大，以致我们不能听到老师的话。
He had so many falls that he was black and blue all over.
他跌了这么多的跤，以致全身青一块、紫一块的。
3. It doesn’t seem very possible to move a mountain.
seem此处作连系动词，意为“似乎;好像”，后跟形容词作表语。可以和seem to be相互转换。例如：
He seems very angry. = He seems to be very angry.
他好像非常生气。
【拓展】
(1) “主语 + seem + (to be) +表语”，表语多为名词或形容词，以说明主语的特征或状态。例如：
Tom seems (to be) a very clever boy. Tom
看上去是一个非常聪明的男孩。
Mr. Black seemed to be quite happy.
Black先生好像十分快乐。
(2) “主语 + seem + 不定式”，此句型中，seem与不定式一起构成复合谓语。例如：
Mrs. Green doesn’t seem to like the idea.
格林夫人似乎不太喜欢这个主意。
The children seemed to be eating something in the room.
孩子们好像正在房间里吃东西呢。
(3) “It seems + that从句”，其中it是形式主语，that引导主语从句。例如：
It seems that no one knows what has happened in the park.
似乎没有人知道在公园里发生了什么事。
It seems to me that Mr. Brown will not come again.
在我看来布朗先生不会再来了。
(4) “There + seem to be + 名词”，to be可省略，seem的单复数要由后面的名词决定。例如：
There doesn’t seem to be much hope of our beating that team.
看来我们战胜那个队没有多大希望。
There seems no need to wait longer. 看来没有再等的必要了。
4. ...what’s possible unless you try to make it happen.
unless是连词，引导条件状语从句，意为“除非……;如果不……;除了……”，常引导一个否定意义的真实条件句，有时也可引导非真实条件句。unless引导的条件状语从句中的谓语动词常用一般现在时代替一般将来时。主要用于下列情况：
(1) 主句为肯定句：
You will miss the bus unless you hurry up.
你要不快点就会错过班车。
You’ll fail in chemistry again unless you work harder.
如果你不再加把劲，你化学考试还会不及格。
(2) 主句为否定句：
One can’t learn a foreign language unless he studies hard.
不下苦功夫是学不好外语的。
I will not go unless I hear from him.
如果我不收到他的来信，我就不去。
【拓展】unless与if…not的辨析
5. Did you hear our stepmother planning to kill us?
hear sb. doing sth.表示“听到某人正在做某事(正在进行)”。例如：
I heard him singing when I walked past the shop.
昨天我路过商店时，听见他正在唱歌。
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