语法是英语的灵魂，是把单词串联起来的一条线。小编在这里整理了相关知识，快乐看看吧!
PEP小学五年级英语下册语法讲解
现在进行时
一.意义——当表示现在正在进行的动作或正在发生的事。
二.构成:be (am, is ,are )+动词现在分词-ing形式
标志性词语：
1.现在进行时.通常用“now”.
eg: I am doing my homework now.
2.现在进行时.通常用“look”.
eg: Look! My mother is running!!!
3.现在进行时.通常用“listen”.
eg: Listen! They are reading.
4.现在进行时.通常用“at the (this) moment”
eg: At the (this) moment, he is only weeping.
三、现在进行时的句型变化
• 肯定式结构：主语+be+动词-ing形式+其他.例如：
We are running now.
• 否定式结构：主语+be+not+动词-ing形式+其他.例如：
They aren’t doing their homework.
• 一般疑问句式结构：Be+主语+动词-ing形式+其他?例如：
Is she having English lesson?
回答：肯定Yes, she is. 否定:No, she isn’t.
• 特殊疑问句式结构：疑问词+be+主语+其他?例如:
What is he doing now?
回答：He is swimming.
四. 现在分词的构成：
(1)一般在动词末尾直接加ing,
1 一般情况下直接加ing
think---thinking sleep---sleeping study---studying speak---speaking say---saying
(2)以不发音字母e结尾的动词，先去掉e,再加ing，
如 skate →skating make →making dance → dancing write → writing have→ having ride → riding come → coming
(3)以重读闭音节结尾的动词，中间只有一个元音字母，词尾只有一个辅音字母，应双写末尾的辅音字母，再加ing, 如： putting running beginning stopping swimming shopping jogging
sitting getting forgetting letting
(4)以ie结尾的动词，把ie改为y ，再加ing
die---dying lie---lying
五、现在进行时的用法
(1)用来表示说话时正在进行或者发生的动作，例如：
Mother is cooking in the kitchen.妈妈在厨房里煮饭。
What are you looking at? 你在看什么?
(2)用来表示现阶段正在进行的动作(但说话时不一定在进行)，例如：
Is she writing a novel? 她正在写一本小说吗?
(3)用来表示即将发生的动作，一般是指按计划或者安排好要发生的动作。适用于这种情况的动词主要有：go,come,leave,start,arrive等。例如:
I’m going home in half an hour.我一个半小时内要回家。
The train is arriving soon.火车很快就要到达了。
六.时间标志——now，句前的look ,listen
一般现在时
一. 意义：表示经常发生的事情，动作或存在的状态
二. 构成及变化
1.be动词的变化。
肯定句：主语+be(am,is,are)+其它。如： I am a boy.我是一个男孩。
否定句：主语+ be + not +其它。如：He is not a worker.他不是工人。
一般疑问句：Be +主语+其它。 如：-Are you a student? -Yes. I am. / No, I'm not.
特殊疑问句：疑问词+一般疑问句。如：Where is my bike?
2. 行为动词的变化。
(1)、当主语为第一，二人称及复数时，助动词为do
肯定句：主语+动词原形(+其它)。如： We often play basketball after school.
否定句：主语+ don't+动词原形(+其它)。如：we don’t play basketball after school.
一般疑问句：Do +主语+动词原形+其它?
如： Do you often play basketball after school l? Yes, we do. / No, we don't.
特殊疑问句：疑问词+以do开头的一般疑问句?
如： What do you often do after school ?
(2)、当主语为第三人称单数时 ,助动词为does
肯定句：主语+动词三单式(+其它)。如： He swims well.
否定句：主语+ doesn’t+动词原形(+其它)。如：He doesn’t swim well..
一般疑问句：Does +主语+动词原形+其它。
如：Does he swim well ? Yes, he does. / No, he doesn't.
特殊疑问句：疑问词+以does开头的一般疑问句?
如： How does your father go to work?
三.第三人称单数的动词变化规则(只有在第三人称为主语的肯定句中，动词才用三单式)
(1)多数动词直接加s:
runsgetslikescolletstakesplaysclimbs…….
(2)结尾是s, x, sh, ch, o,前为辅音字母,
结尾加es :watchesteachesgoesdoeswashescrossesmixesbrushes
(3)动词末尾y前为辅音:将y改为i加es: study→studies fly→flies carry→carries cry→cries
但在y前如果为元音则直接加s:buys says
四.时间标志：always , usually , often , sometimes ,every…
英语人称代词
用法：1.人称代词主格用来作主语，一般放在谓语动词之前。例如：
I am from China.我来自中国。 We are good friends.我们是好朋友。
2.人称代词宾格用来作宾语，放在动词或介词的后面。例如：
Mr.Wang teaches us English.王老师教我们英语。
Let me help you.让我来帮你。
What’s wrong with him ?他怎么了?
成语双语故事：如鱼得水
to feel just like a fish in water
如鱼得水
In the late Eastern Han Dynasty， the country was in confusion.
东汉末年，天下大乱。
In order to reunite the country， Liu Bei paid a visit to Zhu Geliang who had hidden himself in the countryside.
刘备为统一天下，特意拜访隐居的诸葛亮寻求帮助。
He went there twice but didn‘t see Zhu Geliang. Then the third time he finally met him.
他连去了两次都没见到诸葛亮，第三次才见到了他。
Liu Bei explained why he came and explained his noble ambition to Zhu Geliang.Zhu Geliang also proposed some very good strategies.
刘备说明来意，并畅谈了自己的宏图大志。诸葛亮也提出了周详的战略方针。
After listening， Liu Bei was so happy， he appointed Zhu Geliang as his military advisor.He said： “Zhu Geliang to me is as water is to fish.”
刘备听后大喜，于是立诸葛亮为军师。他说：“我刘备有了诸葛亮，就好像鱼儿有了水一样。”
With the assistance of Zhu Geliang， Liu Bei’s power expanded rapidly， and finally he realized his goal.
刘备在诸葛亮的帮助下，势力不断扩大，最终实现了目标。
Nowadays， this phrase is often used to describe the person who stays in the environment which suits him/her perfectly， or someone who is very adept at using the suitable or right methods.
如今，这个短语常常被用来形容一个人处在完全适合自己的环境中，或者一个人能够熟练地应用合适的或正确的方法。
“如鱼得水”用英文可以表达为“feel just like a fish in water”，我们来看一个例句：
I‘ve wanted to study at Beijing University my whole life. I also love the culture and the weather in Beijing. I feel just like a fish in water.
去北京大学学习是我一生的梦想。我还喜欢北京的文化气氛和天气。我在北京简直就是如鱼得水。
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