一般现在时的讲解
一、一般现在时定义:
①经常性、习惯性的动作或存在的状态。
I go to school on foot.
②表示主语现在的性格、特征、能力。
He can swim.
③表示客观真理。
The sun is bigger than the moon.
二、一般现在时的构成:有两种结构
1、当谓语动词是be 动词am, is ,are时,
1)肯定句式 主语 + am/ are/ is + 其他。
2)否定句式 主语 + am/ are/ is + not + 其他。
3)一般疑问句
Am/ Is/ Are + 主语 + 其他?
肯定回答 Yes, 主语+ am/ is/ are
否定回答 No, 主语+ am/ is/ are + not(必须用缩写形式 isn't/aren't)
Danny is a good student.
Danny______ a good student.
____ Danny a good student?
Yes, she ___. \\ No,she ____.
2、当谓语动词是行为动词(实义动词)时
1)当主语是第一人称 (I / we) ; 第二人称 (you) 及第三人称复数 (they及复数的名词)时:
①肯定句 主语 + 行为动词原形 + 其他
②否定句 主语 + don’t + 行为动词原形 + 其他
③一般疑问句 Do + 主语 + 行为动词原形 + 其他
肯定回答 Yes, 主语(必须是代词)+do
否定回答 No, 主语(必须是代词)+don’t
They have lunch at 12:00.
They ______have lunch at 12:00.
______ they have lunch at 12:00?
Yes, they _____.
No, they ____ .
2)当主语是第三人称单数 (she/ he/ it及单数的名词) 时
①肯定句 主语 + 行为动词的单三形式 + 其他
②否定句 主语 + doesn’t + 行为动词原形 + 其他
③一般疑问句 Does + 主语 + 行为动词原形 + 其他
肯定回答 Yes, 主语(必须是代词)+ does
否定回答 No, 主语(必须是代词)+ doesn’t
Jenny ________(说) English very well.
Jenny _________(否定句)English very well.
_______Jenny speak English very well?
Yes, she ______ No, she _______
三.动词第三人称单数词尾变化有三种形式:与可数名词的复数规则相同
(1)一般动词在词尾加-s,-s在清辅音后读/s/,在浊辅音或元音后读/z/,ds读/dz/,ts读/ts/。如: help→helps,know→knows,get→gets,read→reads (2)以字母s,x,ch,sh或有些以o结尾的动词加-es,-es读/iz/。如: guess→guesses,fix→fixes,teach→teaches,wash→washes 注意:go→goes do→does (3)以辅音字母+y结尾的动词,先变 y为i,再加-es,-ies读/iz/。如: carry→carries,fly→flies 注:在play→plays/pleiz/,say→says/sez/中,字母y前为元音字母,第三人称单数形式直接在动词后面加-s。
(4)特殊词例外。如:be→is,have→has 练习:一
( )1. I ________to school at 7:00 in the morning.
A. go B. going C. goes
( )2. They _______books every day in the library.
A.reads B. read C. reading
( )3. The monkey________ eating bananas very much.
A.like B. likes C. liking
( )4. My father ________to read newspaper after supper every day.
A.like B. likes C. liking
( )5. I like watching TV, but my mother _________like it.
A. don’t B. doesn’t C. Does
二,写出下列动词的单三形式
do________ like________ pass__________ carry ____
have___________ watch________make __________ look ____
drink ___________ fly___________ study_______ stay __________
say_______ learn ___________ buy__________ sing___________
三,按照要求改写句子
1. Daniel watches TV every evening.(改为否定句)
2. I do my homework every day.(改为一般疑问句,作否定回答)
3. She likes milk.(改为一般疑问句,作肯定回答)
4. I like taking photos in the park.(对划线部分提问)
5. John comes from?Canada.(对划线部分提问)
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