也可以和包括现在在内的时间状语,如these days, today, recently, this year, so far(=by now)等连用.
2.基本结构:
助动词have/has + 动词的过去分词 e.g. I have already posted the letter.
二十二、some /any
肯定句:I have some toys in my bedroom.
一般疑问句和否定句中:Do you have any brothers or sisters? He doesn’t have any pencils in his pencil case.
表示建议、请求等:Would you like some juice? Can I have some stamps?
二十三、祈使句
Sit down, please. Don’t open the door.. Let’s go to the park.
一:学生易错词汇
1. a, an的选择: 元音字母开头的单词用an,辅音字母开头的单词用a.
2. am , is , are的选择: 单数用is , 复数用are. I 用 am , you 用 are.
3. have , has 的选择: 表示某人有某物。单数用has , 复数用have. I ,you 用 have .
4. there is, there are 的选择:表示某地有某物,某人。单数用there is , 复数用there are.
5. some, any 的选择:肯定句用some, 疑问句和否定句用any.
6. 疑问词的选择:what (什么) who (谁) where (哪里) whose (谁的) why(为什么)when(什么时候)which(哪一个)how old (多大) how many (多少)how much(多少钱)
二:形容词比较级详解
当我们需要对事物作出比较时,需要用到比较级。比较级的句子结构通常是:
什么 + 动词be (am , is , are ) + 形容词比较级 + than(比)+ 什么 ,如:
I’m taller and heavier than you. (我比你更高和更重。)
An elephant is bigger than a tiger. (一只大象比一只老虎更大。)
形容词的比较级是在形容词的基础上变化而来的,它的变化规则是:
① 一般的直接在词尾加er ,如 tall - taller , strong - stronger ,
② 以e结尾的,直接加r ,如 fine – finer ,
③ 以辅音字母加y结尾的,先改y为i再加er,如funny - funnier
④ 双写最后的字母再加er,如big – bigger, thin – thinner ,hot – hotter
☆注意☆ 比较的两者应该是互相对应的可比较的东西。
典型错误:My hair is longer than you.(我的头发比你更长。)
比较的两者是我的头发、你(整个人),那么比较的对象就没有可比性。
应该改为:My hair is longer than yours. 或My hair is longer than your hair.
比较级专项练习: 一、从方框中选出合适的单词完成句子 heavy tall long big
(1) How is the Yellow River?
(2) How is Mr Green? He’s 175cm.
(3) How are your feet? I wear size 18.
(4)How is the fish? It’s 2kg.
三:动词过去式详解 动词的过去式的构成规则
A、规则动词
① 一般直接在动词的后面加ed:如 worked , learned , cleaned , visited
② 以e结尾的动词直接加d:如 lived , danced , used
③ 以辅音字母加y结尾的动词要改y为i再加ed(此类动词较少)如 study – studied carry – carried worry – worried (注意play、stay不是辅音字母加y,所以不属于此类)
④ 双写最后一个字母(此类动词较少)如 stopped
B、不规则动词(此类词并无规则,须熟记)小学阶段要记住以下动词的原形和过去式:
sing – sang ,
eat – ate ,
see – saw ,
have – had ,
do – did ,
go – went ,
take – took ,
buy – bought ,
get – got ,
read – read ,
fly – flew ,
am/is – was ,
are – were ,
say – said ,
leave – left ,
swim – swam ,
tell – told ,
draw – drew ,
come – came ,
lose – lost ,
find – found ,
drink – drank ,
hurt – hurt ,
feel – felt
四:动词现在分词详解 动词的ing形式的构成规则
① 一般的直接在后面加上ing , 如doing , going , working , singing , eating
② 以e 结尾的动词,要先去e再加ing ,如having , writing
③ 双写最后一个字母的(此类动词极少)有:running , swimming , sitting , getting
五:句型专项归类
1、 肯定句:是指用肯定的语气来陈述的句子,如:I’m a student. She is a doctor. He works in a hospital.
There are four fans in our classroom. He will eat lunch at 12:00. I watched TV yesterday evening.
2、否定句:含有否定词或表示否定意义词的句子,如:I’m not a student. She is not (isn’t) a doctor.
He does not (doesn’t) work in a hospital. There are not (aren’t) four fans in our classroom.
He will not (won’t) eat lunch at 12:00. I did not (didn’t) watch TV yesterday evening.
如:Are you a student? Yes, I am / No, I’m not.
Is she a doctor? Yes, she is. / No, she isn’t.
Does he work in a hospital? Yes, he does. / No, he doesn’t.
Are there four fans in our classroom? Yes, there are. / No, there aren’t.
Are you going to buy a comic book tonight? Yes, I am. / No, I am not. (Yes, we are. / No, we aren’t.)
Will he eat lunch at 12:00? Yes, I will. / No, I will not(won’t).
Are they swimming? Yes, they are. / No, they aren’t.
Did you watch TV yesterday evening? Yes, I did. / No, I didn’t.
4、特殊疑问句:以特殊疑问词(what , where , who , which , when , whose , why , how等)开头引导的句子。此类句子应该问什么就答什么,不能用“yes 、no”来回答。如:
What is this? It’s a computer.
What does he do? He’s a doctor.
Where are you going? I’m going to Beijing.
Who played football with you yesterday afternoon? Mike.
Which season do you like best? Summer.
When do you usually get up? I usually get up at 6:30.
Whose skirt is this? It’s Amy’s.
Why do you like spring best? Because I can plant trees.
How are you? I’m fine. / I’m happy.
How did you go to Xinjiang? I went to Xinjiang by train.
☆其中how又可以和其他一些形容词连用组成特殊疑问词组用来提问,如: how many(多少(数量)), how much(多少(钱)), how tall(多高), how long(多长), how big(多大), how heavy(多重)
例句:How many pencils do you have? I have three pencils.
How many girls can you see? I can see four girls.
How many desks are there in your classroom? There are 51.
☆小结:how many 用来提问可数名词的数量,主要有以上三种句式搭配,
How many + 名词复数 + do you have? 你有多少……?
How many + 名词复数 + can you see? 你能看见多少……?
How many + 名词复数 + are there…? 有多少……?