都是一般现在式
How often do (do)you go to see the film?
主语是第二人称,不用does
He usually studies (study)very late every night.
主语是第三人称单数,要变y为i加es
She is good at swimming (swim).
be good at doing sth固定短语
Bob likes surfing/to surf(surf) the Internet.
like doing sth或 to do sth都对,用法基本一样
My good healthy habits helps (help)me get good grades.
My good healthy habits做主语,一个整体,所以动词help后加s
一般现在时:
表示
1)经常性或习惯性的动作,常与表示频腮度的时间状语连用。
2) 客观真理,客观存在,科学事实。
3) 表示格言或警句中。
4) 现在时刻的状态、能力、性格、个性。
一. 一般现在时行为动词词型变化形式
一般现在时动词只有第三人称有词形变化,其他人称动词均用原形单数第三人称动词变化:
多数在动词后加s play—plays like—likes ,以s,x,sh,ch,o结尾的动词加es go—goes wash--washes,以辅音字母加y结尾,把y改i再加es fly—flies study--studies
二. 一般现在时动词be和 have的变化形式
1.连系动词be的用法:除了第一人称单数用am,和第三人称单数用is以外,其它人称用are。
I am busy. You are busy. He (She) is busy. We (You, They) are busy.
2.动词have的用法:除了第三人称单数用has以外,其它人称一律用have。如: I have a pen. You have a pen. She (He) has a pen.
We (You, They) have pens.
三. 一般现在时的句型
1.肯定句构成:主语+动词 (注意人称变化) +其它成分
例:I have a dog. We like the little cat. She sings well.
2.否定句构成:
行为动词的否定句:主语+助动词(do/does) + not +动词原形+其它成分
例: He dosen’t have a dog. He isn’t young. We don’t like the little cat.
3.一般疑问句:
A.行为动词的一般疑问句:助动词(do/does)+主语+动词原形 + 其它成分
Do you like it? Yes, I do. / No. I don’t .
Does he(she) like it?
Yes, he( she )does. / No, he ( she )doesn’t.
B. 动词BE 的一般疑问句Am / Is /Are +主语 + 其它成分
Are you a teacher? Yes, I am. / No, I am not.
Are they students of your school.Yes they are / No they aren,t.
4.特殊疑问句:特殊疑问词 + 一般疑问句
How many students are there in your school?
What do you usually do on Sunday?
参考资料:http://blog.luohuedu.net/blog/view.aspx?BlogID=946&essayid=30543