语法之一般现在时

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情态动词结构的肯、否、疑：疑问句情态动词提 到主语前 He can swim. He can’t swim. Can he swim? 时间状语：
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A. 频率副词： Never<seldom<sometimes<often<usually<al ways 位置：肯定/否定: 行之前，be和情之后；疑问： 主之后
D. 特殊记忆：does, goes, has
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如：Bob studies(study) in a middle school and we study (study) in primary school.
Bob writes (write) good English but he does not speak (speak) very well.
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肯定：I/ He +动词原形/动词三单+其他。 否定: I/He+ don’t/ doesn’t +动词原形+其他。
一般疑问句：Do/ Does +I/ he+动词原形+其他？
Yes, I/ he+ do/ does. No, I/he +don’t/doesn’t.
特殊疑问句: Wh-/How+ do/does+主语+动词原 形+其他？
He is always happy.
He often comes late.
Do you usually sleep early?
sometimes 可放在句首或句尾表示强调。
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B. Every 类: every day/ every week /every year/ every time(每次) 次数类: once/ twice /three times a month (每 月一次/两次/三次)
8. I often TV.
read
(read) books. She often
watches
(watc
9. She has
(have) a brother but I
don’t have
(have) one
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10. Mary likes films and she goes (go) to the cinema very often.
On +时间的复数：表示每逢… ,或表示大部分…
on Sundays(每周日), on fine afternoons(每逢 好天气的下午)
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பைடு நூலகம்
用下列动词的一般现在时填空，有时需用否定形式。 1. I drink (drink) coffee every day, but I don’t drink (drink) tea. 2. Tea is good for body. But Jeandoesn’t drink (drink) tea very often. doesn’t rise 3. The sun (rise) in the west every day. 4. A liar(撒谎者) is someone who doesn’t tell (tell) the truth.
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5. Now food is expensive. It money.
costs
(cost) a lot of
6. The job is boring. Tom
doesn’t like
(like) it very much.
don’t cut (cut) my hair very often, once three 7. I month.
LOGO
第一讲 一般现在时（Simple Present）
Echo
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概念
表示现在某种状况，常于be动词结构中，I am a teacher.
表示经常、反复发生的动作或状态，常用于 实意动词结构,I like English.
表示所叙述动作的态度和看法，常用于 情态动词结构，I can’t swim.
We often go (go) to school on foot, but Bob often goes (go) to school by bike. We don’t come (come) to school late. Does Bob (come)come to school late? No, he doesn’t .
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Be动词结构的肯、否、疑： 口诀：I是am, you 是are, is跟着他她它。

单数is复数are,走遍天下都不怕。
肯定：主语+be (am/ is/ are)+其他。
否定：主语+ am not/ isn’t/ aren’t +其他。
一般疑问句（yes/ no question）： Am/ Is /Are+ 主语+其他？ Yes, 主语+am/ is/ are. No, 主语+am not/ isn’t/ aren’t.
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特殊疑问句(Wh-/How question): Wh-/How +am/ is/ are+主语？
注意: be动词提到主语前构成疑问语气
Is she a teacher? ----No, she isn’t.
What’s his job? ----He is a teacher.
I like English.
He doesn’t like English.
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动词第三人称单数形式的变化 A. 一般在词尾加-s, 如：takes，likes
B. 在以s, z, x, sh, ch结尾的词在词尾加-es, 如： pass, watches C. 以辅音字母+y结尾的，把y变i加-es, 如： study—studies
根据回答用一般现在时提问
1. ----What do you do in a bookshop. 2. ---- Does it rain a lot Yes, it rains a lot here. ？-----I work where you live?----
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00
3. ----How does she usually go ----She usually goes by bus.
to work?
4. Does he like 5. How often do you
his new job? play tennis ？
---- No, he doesn’t like it. ----I play tennis once a week.
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实意/行为动词结构的肯、否、疑，根据主语分为 两类
A. 三单（代词第三人称单数he, she, it和单数名 词）肯定句动词变为第三人称单数形式，否定由 助动词does 与not构成，疑问句does提到主语前 构成。
B. 非三单（其他代词I, you, we, they和复数名词） 肯定句使用动词原形，否定由助动词do和not构 成，疑问句do提到主语前构成。