10.Mother ___ to Shanghai and she'll be back in a week or so.        

动词的时态(上)

A:一般现在时棗通常表示目前阶段经常发生的动作或存在的状态。

结构 :1)be动词的第一人称单数为,第三人称单数为,其他人称为。

有一顺口溜体现了它的用法: 我是am你是are ,is跟着他她它, 复数都用are

肯定式:主语+ am /is/are +其他  否定式:主语+ am/is/are +not + 其他

疑问式:Am /Is /Are + 主语+ 其他?简略回答: (肯) Yes,主语 + am/ is /are

(否) No,主语 + am /is/are not缩写形式: I'm == I am That's ==That is

We're ==We are What's== What is   You're == You are Who's == Who is

They're ==They are Where's ==Where is   He's ==He is isn't==is not

She's ==She is aren't==are not   It's == It is

2)行为动词除主语是第三人称单数外,都用动词原形,主语是第三人称单数时,在动词 词尾加-s或-es  肯定式:主语+动词原形/动词的第三人称单数  , 否定式:主语+助动词 don't/doesn't +动词原形+其他     疑问式:Do/Does+主语+动词原形+其他      简略回答:(肯)Yes,主语+do/does    (否)No,主语+do/does not     缩写形式: don't == do not   doesn't ==does not

注意:have的第三人称单数为has

用法: 1.表示事实,现状,性质或经常的,习惯的动作,常与often, usually, always, sometimes, today,every day,once a week, every five minutes, on Sundays等时间状语连用,   eg. He has a brother.   2.表示普遍真理. eg. The earth goes round the sun. 

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