天津河西英语快速记忆方法，誉德文苑互动教学
誉德教育注重培养学生记忆英语单词能力。让孩子轻松记单词，3000单词赢战900小升初，4000赢战1600中考，7000赢战3500高考。更重要的是我们教授的不单单是英语，更是一种思维；提升的不仅是知识点应用，更是一种学习英语的方法、能力
誉德教育英语小课堂：
一、助动词
助动词本身没有词义，不能单独作谓语，只能和主要动词一起构成谓语动词，表示否定、疑问、时态、语态等语法形式，或用来加强语气。常用的助动词有:be, do, have, shall, will等。它们的具体用法如下：
（1）助动词be
a. 可用于构成进行时态
she is doing her homework now.
i asked him what he had been doing all afternoon.
b. 可用于构成被动语态
the baby was put in bed by his mother.
the invitation was received yesterday.
c. 可与动词不定式构成谓语
these books are not to be taken out of the room.
she is to arrive at six this morning.
（2）助动词have
a. 构成完成时态
i have not seen him for three years.
how long has your uncle taught in the village?
he had lived in scotland for fifteen years before he came to england.
b. 和动词不定式构成谓语，表示因客观环境促使不得不做的事情
she had to go shopping yesterday.
（3）助动词do
a. 构成疑问句和否定句
did anyone sharpen this knife?
i don’t think you are right.
b．用来加强语气
i do want to have a talk with you
do come and see me.
c．用来代替动词词组
have you finished your work?yes, i did yesterday.
he plays basketball well. so does his brother.
（4）助动词shall
构成将来时态，单纯表示未来情况
i shall not be back tonight.
we shall pay a visit to the banpo ruins next month.
（5）助动词will
构成将来时，用于第v一、二、三人称。如：
they will move to a new house.
she will not eat any solid food.
注意：
（1）have to 与must的区别
must是情态动词，意思是“必须”、“应该”、“一v定要”，后接动词原形。must的否定形式为mustn’t.构成疑问句时，肯定回答一般用must。否定回答用needn’t或don’t have to 表示“不必”。如：
must i do it now ?
yes, you mustno, you needn’t.
have to 表示“不得不，必须”，可用于多种时态。
i missed the train, so i had to take a taxi.
i’m sorry i won’t go with you, i’ll have to go to the bank.
we don’t have to install this new television set.
（2）used to 表示过去常常，而现在不再有的习惯。其否定形式为: used not to, usedn’t (usen’t) to , didn’t use to.
i used to go to work by bus. now i go by car.
i used to collect stamps when i was a boy.
used they to have a lot more free time ?
天津誉德文苑教育咨询有限公司
18602258280
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天津河西英语快速记忆方法，誉德文苑互动教学
供应GRAPHTEC多功能记录器GL820
激光焊机，激光焊接器
株洲小孔消声器价格
一起快点 一起快点 一起快点
烟囱内衬耐酸砖价格中冠生产销售特种规格耐酸瓷砖
武汉天星科普天上水科普展品科技馆科普教学仪器
9*5.5mm有源/无源蜂鸣器
多用途锯片万应宝锯片博世锯片
批发ARCUS直流便携式热剥器
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供应双头螺丝
联宏封头|椭圆封头高度北辰封头,北辰封头价格
供应围栏拉网水泥柱
誉德教育英语小课堂：
一、助动词
助动词本身没有词义，不能单独作谓语，只能和主要动词一起构成谓语动词，表示否定、疑问、时态、语态等语法形式，或用来加强语气。常用的助动词有:be, do, have, shall, will等。它们的具体用法如下：
（1）助动词be
a. 可用于构成进行时态
she is doing her homework now.
i asked him what he had been doing all afternoon.
b. 可用于构成被动语态
the baby was put in bed by his mother.
the invitation was received yesterday.
c. 可与动词不定式构成谓语
these books are not to be taken out of the room.
she is to arrive at six this morning.
（2）助动词have
a. 构成完成时态
i have not seen him for three years.
how long has your uncle taught in the village?
he had lived in scotland for fifteen years before he came to england.
b. 和动词不定式构成谓语，表示因客观环境促使不得不做的事情
she had to go shopping yesterday.
（3）助动词do
a. 构成疑问句和否定句
did anyone sharpen this knife?
i don’t think you are right.
b．用来加强语气
i do want to have a talk with you
do come and see me.
c．用来代替动词词组
have you finished your work?yes, i did yesterday.
he plays basketball well. so does his brother.
（4）助动词shall
构成将来时态，单纯表示未来情况
i shall not be back tonight.
we shall pay a visit to the banpo ruins next month.
（5）助动词will
构成将来时，用于第v一、二、三人称。如：
they will move to a new house.
she will not eat any solid food.
注意：
（1）have to 与must的区别
must是情态动词，意思是“必须”、“应该”、“一v定要”，后接动词原形。must的否定形式为mustn’t.构成疑问句时，肯定回答一般用must。否定回答用needn’t或don’t have to 表示“不必”。如：
must i do it now ?
yes, you mustno, you needn’t.
have to 表示“不得不，必须”，可用于多种时态。
i missed the train, so i had to take a taxi.
i’m sorry i won’t go with you, i’ll have to go to the bank.
we don’t have to install this new television set.
（2）used to 表示过去常常，而现在不再有的习惯。其否定形式为: used not to, usedn’t (usen’t) to , didn’t use to.
i used to go to work by bus. now i go by car.
i used to collect stamps when i was a boy.
used they to have a lot more free time ?
天津誉德文苑教育咨询有限公司
18602258280
供应石棉硅油盘根
供应自动量热仪价格/大卡量热仪价格/热值量热仪价格
散热片、【桑禾】品质赢口碑、散热片价格
广州钢板网护栏 公路钢板护栏网 拉伸网 加油站护栏网
供应全自动卧式微机量热仪（可双控）
天津河西英语快速记忆方法，誉德文苑互动教学
供应GRAPHTEC多功能记录器GL820
激光焊机，激光焊接器
株洲小孔消声器价格
一起快点 一起快点 一起快点
烟囱内衬耐酸砖价格中冠生产销售特种规格耐酸瓷砖
武汉天星科普天上水科普展品科技馆科普教学仪器
9*5.5mm有源/无源蜂鸣器
多用途锯片万应宝锯片博世锯片
批发ARCUS直流便携式热剥器
厂家直销气动冲床 质优价廉
蔬菜大棚建设 种植技术 蔬菜大棚图片德鑫农业
供应双头螺丝
联宏封头|椭圆封头高度北辰封头,北辰封头价格
供应围栏拉网水泥柱