六年级下册英语素材-小升初语法专项 一般现在时讲解 全国通用

小升初英语一般现在时
一、定义
表示目前的状态或经常性的动作。

Jerry is a big guy. He eats three bowls of meat every day.
二、结构
1.“主系表”结构：
e.g. You are a student. You are not a student. Are you a student? Yes, you are. No, you aren’t.肯：主+ be(am, is, are) + 表
否：主+be(am, is, are)+not+表
疑：Be+主+表?
肯定回答: Yes, 主+be.
否定回答: No, 主+be not. (可缩写) am not is not=isn’t are not=aren’t
2.“主+谓+宾”结构
肯：主（三单）+谓+s +宾
否：主（三单）+don’t/doesn’t +v.原+宾。

疑：Do/Does +主+v.原形+宾?
肯定回答：Yes, 主+do/ does. 否定回答：No, 主+ don’t/doesn’t.
例如：He likes English.
(变否) He doesn’t like English.
(变疑) Does he like English? Yes, he does./ No, he doesn’t.
3. 特殊疑问句
⑴结构：特词+助v.+主+谓v原+其它？
He does his homework every day. (变否、变疑、并对划线部分提问)
特疑：What does he do every day?
解析：否定句中的doesn’t 为助动词，第二个do 为实义动词。

He brushes his teeth three times a day.
对three times 提问：（即对次数提问）How many times does he brush his teeth a day?
对three times a day 提问：（对频率提问）How often does he brush his teeth?
三、动词变化
1.三单概念(1) 当主语为第三人称单数，he/she/it (2) 一个物a cat等(3) 一个人Tom, my friend等
2.动词的单三形式变化
变化口诀：s，es，y变i，have变has。

⑵一般情况词尾+s：works, looks, wants
⑶以-ch, -sh, -s, -x, -o结尾词尾+es：teaches, washes, dresses, fixes, goes
⑷以辅音字母+y结尾变y为i,再加es ：flies, cries, tries
四、标志性时间状语
判断一个句子是什么时态的依据就是要学会“依照时间，来定时态”。

即“依时定态”。

例如：He runs (run) every day.
“一般现在时”的时间状语：
1. every系列: every day / every week / every month / every year
I go to school on foot every day.
2.“频率副词”系列：always, usually, often, sometimes, never等（渐弱）
频率副词在句子中的“位置口诀”：“be” 之后，“行”之前，“情”、“助”与“行”之间。

但：sometimes 常用于句首或句尾。

(1) Tom is often late for school. Mary is always beautiful. (be之后)
(2) I often go to school at 6:00. Girls usually like sweets. (“行”之前)
(情与行之间)
(4) I don’t often go to school at 3:00. (助与行之间)
(5) Sometimes he goes to school by bus.
3. on Sundays (每逢星期几)系列: On Saturdays / On Friday / On Monday
I go to see my grandmother on Sundays.
4. once a week (系列)：twice a month, three times a day.等
I write to my mother twice a month.
五、用法
1.经常性、习惯性动作或状态。

2.习语、谚语。

A friend in need is friend indeed.
3.“客观真理不动摇”：始终要用一般现在时。

The teacher told us that the earth goes around the sun.。