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英语动词思维导图怎么画
目标：理解概念、适用时态、句式转换
第三人称单数是英语中的一种语法，也称“三单”或“单三”，用于一般现在时的句子，当动词在第三人称单数后时【 she 、 he 、 it 、不可数名词和人名】，要根据其情况变化。通常在动词后面添加加 s / es。
一、掌握动词单三形式的变换规则。
1.大多数实义动词在词尾加“s”在清辅音后发音为/ s / ；在浊辅音及元音音素后发音为 / z /。 如speak→speaks / s / ; come→comes / z / ; play→plays / z / 。
2.以辅音字母加“y”结尾的动词，要先将“y”变为“i”然后再加“es”读/ iz /。 如study→studies / iz / ; fly→flies / iz /。
3.以“s、x、ch、sh”结尾的动词在词尾加“es”发音为/ iz / 。 如teach→teaches / iz / ; watch→watches / iz /。
4.以“o”结尾的动词,在词尾加“es”。 常出现的两个以“o”结尾的动词go和do后加“es”读/ z / 。 如go→goes / z / ; do→does / z /。
二、掌握单三形式的具体用法。
1.人称代词he, she, it是第三人称单数。如：
He likes watching TV. 他喜欢看电视。
She has lunch at twelve. 她十二点吃午餐。
she looks like a cat. 她看起来像只猫。
2.单个人名、地名或称呼作主语；是第三人称单数。如：
①Han Mei looks like her mother. 韩梅看起来像她的母亲。
②Beijing is in China. 北京在中国。
③Uncle Wang often makes cakes. 王叔叔经常做蛋糕。
3.单数可数名词或"this/that/the+单数可数名词"作主语时，是第三人称单数。如：
①A horse is a useful animal. 马是有用的动物。
②This book is yours. 这本书是你的。
③That car is red. 那辆小汽车是红色的。
④The cat is Lucy's. 这只猫是露茜的。
4.不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数。如：
①Everyone is here. 大家到齐了。
②There is something wrong with the watch. 这块手表有毛病。
③This is a pen. 这是一支钢笔。
④That is an eraser. 那是一块橡皮擦。
5.不可数名词作主语时为第三人称单数。如：
①The milk is in the glass. 牛奶在玻璃杯里。
②The bread is very small. 那面包很小。
6.当数字或字母作主语时，看作第三人称单数。如："I" is a letter. "I"是个字母。
三、掌握单三的句式转换
1.肯定句
①He likes playing basketball.他喜欢打篮球。
②She reads book everyday.她每天都看书。
③It has a big tail.它有一条大尾巴。
2.否定句
①He doesn't like playing basketball.他不喜欢打篮球。
②She doesn't read book everyday.她每天都不看书。
③It doesn't have a big tail.它没有一条大尾巴。
3.疑问句
①Does he like playing basketball? 他喜欢打篮球吗?
②Does she read book everyday?她每天都看书吗？
③Does it have a big tail?它有一条大尾巴吗？
动词的单三形式指的是“第三人称单数”形式，即在句子中的主语为第三人称单数（he\she\it)的情况下，谓语动词在一般现在时的情况下采取第三人称单数形式。而主语不是第三人称单数形式时，动词在一般现在时句子中用动词原型。
it的用法
非人称代词“它”，可以代“天”“地”等一切事务，无论具体的还是抽象的，用做句子的主语、宾语。如：It is raining. 天在下雨。I love it! 我太喜欢它了。
it的用法
it有它等意思，那么你知道it的用法吗?下面跟着我一起来学习一下，希望对大家的学习有所帮助!
it的用法大全：
it的用法1：用it作人称代词,可替代无生命的东西或事情,在性别不详或无所谓时,也可指代人,尤其是指婴儿。
it的用法2：it作主语时,可指自然现象、季节、时间、距离、环境等。
it的用法3：it可以作先行词，用于强调句型中,强调主语、宾语、时间状语、地点状语、介词宾语或从句等,强调句型中的it一般指已发生过的事,而不指尚未发生或提及的事。
it的用法4：it还常用作形式主语或形式宾语,代替较长的真实主语或真实宾语(其形式多为动词不定式短语或that从句等)。
it的用法5：it可以代替前面提到的某个名词、代词或句子,但在believe, expect, forget, imagine , remember, think等词后常常省略。
it的用法例句：
1. Beauty is an attitude. It has nothing to do with age.
美是一种态度，与年龄无关。
2. English has hurt me a thousand times, but I still regard it as my first love.
英语伤我千百遍，我待英语如初恋。
3. Success is not guaranteed. It is not handed to you. Success is earned.
成功无法保证，并非唾手可得。成功必须靠自己去争取。
4. Success is not final, failure is not fatal: it is the courage to continue that counts.--Winston Churchill
成功不是终点，失败也并非末日，最重要的是继续前进的勇气。
5. If you're not satisfied with the life you're living, don't just complain. Do something about it.
对于现况的不满，不能只是抱怨，要有勇气作出改变。
6. Good luck is when an opportunity comes along and you're prepared for it.
好运就是当机会来临时，你早已做好了准备。
7. It's not about making the amazing saves. It's the little things and small things that made great gatekeepers great.
伟大的门将不是靠神奇的扑救成就，而是靠注重小事和细节成功。(Tim Howard美国国家队门将)
8. Friendship means understanding, not agreement. It means forgiveness, not forgetting.It means the memories last, even if contact is lost.
友情是理解，不是妥协;是原谅，不是遗忘。即使不联系，感情依然在。
9. Remember, happiness doesn't depend upon who you are or what you have; itdepends solely upon what you think.--Dale Carnegie
请记住，幸福不在于你是谁或者你拥有什么，而仅仅取决于你的心态!
10. It was just then that I chanced to look round.
就在那时，我恰好环顾了下四周。
11. I know it's nothing serious and I feel quite unemotional about it.
我知道那根本没什么大不了的，所以有些无动于衷。
12. The house seemed muted, hushed as if it had been deserted.
房子里似乎悄然无声，安静得好像已经没人在住一样。
13. It was the uncommitted that Labour needed to reach.
工党需要拉拢的是未表态者。
14. It had once been the home of a wealthy nobleman.
这里曾是一个有钱贵族的宅邸。
15. I have $100m hidden away where no one will ever find it.
我把1亿美元藏到了一个永远没人会找到的地方。
it的6种用法
以下是我为大家整理的it 的用法 总结 ，希望能帮助大家更好地认识it这个单词，提高英语水平。
1. It is + 被强调部分 + that ...
该句型是强调句型。将被强调的部分放在前面， 其它 部分置于that之后。被强调部分可以是主语，宾语，表语或状语。强调的主语如果是人，that可以由who换用。如果把这种句型结构划掉后，应该是一个完整无缺的 句子 。这也是判断强调句型与其它从句的 方法 。
It was about 600 years ago that the first clock with a face and an hour hand was made.
It was they that (who ) cleaned the classroom yesterday.
It was in the street that I met her father.
2. It is clear ( obvious, true, possible, certain....) that .....
该句型中it 是形式主语，真正的主语是that 引导的主语从句，常译为"清楚(显然，真的，肯定...)" 是主语从句最常见的一种结构。
It is very clear that he’s round and tall like a tree.
= That he’s round and tall like a tree is very clear.
3. It is important ( necessary, right, strange, natural...) that ...
该句型和上一个同属一个句型。由于主句中的形容词不同，that 后的从句中要用虚拟语气(should + 动词原形)，should 可以省去。建议记住该句型中的形容词。
It is important that we (should) learn English well.
It is necessary that he (should) remember these words.
4. It is not until + 被强调部分 + that ...
该句型也是强调句型。主要用于强凋时间状语，译成汉语"直到...才..."，可以说是 not ... until ... 的强调形式。
It was not until she took off her dark glasses that I realized she was a famous film star.
= Not until she took off her dark glasses did I realize she was a famous film star.
= I didn’t realize she was a famous film star until she took off her dark glasses.
5. It is said (reported, learned....) that ...
该句型中的it 仍是形式主语，真正主语是that 引导的主语从句。该结构常译为"据说(据报道，据悉...)"。
It is said that he has come to Beijing.
It is reported that another earth satellite has been put into orbit.
6. It is suggested ( ordered ... ) that ...
该句型和上一个同属一个句型。主句中的过去分词是表示请求，建议，命令等词时，that 后的从句要用虚拟语气(should + 动词原形)，should 可以省。常译为"据建议;有命令...)
It is suggested that the meeting ( should ) be put off.
It was ordered that we ( should ) arrive there in two hours.
7. It is a pity ( a shame ... ) that ...
该句型中，that后的从句一般用虚拟语气(should + 动词原形)，should可省去.表示出乎意料，常译为"竟然"。没有这种意义时，则不用虚拟语气。
It is a pity that such a thing ( should ) happen in your class.
这种事竟然发生在你们班上，真是遗憾!
It is a pity that he is ill. 他生病了，真遗憾!
8. It is time ( about time ,high time ) that ...
该句型中that 后的从句应该用虚拟语气，值得注意的是① 常用过去时态表示虚拟.② 有时也用should + 动词原形，should 不能省。常译为"是(正是)...的时侯..."。
It is time that children should go to bed.
= It is time that children went to bed.
9. It is the first ( second ... ) time that ...
该句型要和上一个句型区别开来。该句型中的 that 从句不用虚拟语气，而用完成时态。至于用什么完成时态，由主句的谓语动词的时态决定。如果是一般现在时，后面从句用现在完成时态;如果是一般过去时，后面从句则用过去完成时态。该结构中 that 可以省去;it有时用 this 替换.常译为"是第一(二)...次..."。
It is the first time I have been here.
= This is the first time I have been here.
10. It is .... since ...
该句型主要用作处理瞬间动词的完成时，又要和表示一段时间的时间状语连用的问题。主句中是时间作表语，其时态是现在时或完成时，since 引导的从句通常是一般过去时态，而且是瞬间动词。如果主句是一般过去时，从句则用过去完成时。
It is ( has been ) 5 years since his father died.
11. It is ... when ...
该句型中的 when 引导的是一个时间状语从句，主句中的 it 指时间，表语由具体的时间充当。常译为"当...的时候，是..."。
It was 5 o’clock when he came here.
12. It be ... before ...
该句型主句中的 it 指时间, 主句中的时态常是将来一般时或过去时两种时态.主句中的表语多是long, not long , 3 days , 2 weeks 等表示时间段的词或 短语 。常译为"...之后..."。
It was 3 days before he went to Beijing.
It will be not long before he finishes his job.
13. It happens (seems, looks, appears ) that...
该句型中it是形式主语，that 引导的是主语从句，主句中的happen , seem等词是不及物动词.
It happened ( so happened ) that he met his teacher in the street. 碰巧..
It seems that he will be back in a few days. 看来...
14. It takes sb. ... to do sth.
该句型中的不定式是真正的主语，it是形式主语，句型中的直接宾语是时间。常译为"做...要花费某人..."。
It took thousands of people many years to build the Great Wall.
15. It is no good (use ) doing sth.
该句型中的真正主语是动名词短语，主句中的表语可以是no good , ( not any good ) , no use , ( not any use )。
It is no good learning English without speaking English.
16. It doesn’t matter whether ( if ) ...
该句型中whether(if) 引导的从句是真正主语，该句型常译为 "不论(是否)...没关系...。
It doesn’t matter if they are old.
17. It is kind ( of sb. ) to do sth.
该句型中的不定式短语是真正主语，如果不定式的逻辑主语是由 of引起，主句中的形容词必须是能表示逻辑主语特征的形容词。常见的有： bad , brave , careless, clever , cruel , foolish , good (好心的), honest , horrible , kind , lazy , modest , naughty , nice(有教养的), polite, rude , silly , stupid , wise , wrong(错误的)等。 这个句型可以改写为：sb. is kind to do sth.
It is kind of you to say so.
= You are kind to say so.
18. It is necessary ( for sb. ) to do sth.
该句型与上一个同属一个句型。如果不定式的逻辑主语是由for引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的形容词。常见的形容词有：① important, necessary, natural ② easy , safe , common , normal , hard , difficult , dangerous , unusual, rare , impossible , pleasant等。
在①中的形容词作表语可以用从句改写， 如：
It is important for her to come to the party.
= It is important that she (should ) come to the party
19. It looks ( seems ) as if ...
该句型中it无意义。 as if 引导一个状语从句。常译为，"看起来好象..."如果与事实不相符合，则用虚拟语气.
It looks as if he is ill.(真的病了)
It looks as if he were ill. (没有生病)
It seemed as if he were dying.
20. We think it important to learn a foreign language.
该句型中的it 作形式宾语。为了记忆方便我们可称该句型为"6123结构"。
6指主句中常用的动词：think, believe, make, find, consider, feel;
1指的是形式宾语it;
2指的是宾补的两种形式：形容词或名词;
3指的是真正宾语的三种形式：不定式短语，动名词短语或that引导的宾语从句。
We think it our duty to clean our classroom every day.
He felt it important learning English well.
They found it difficult that they would finish their work in two days.
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