① 英語中肯定句怎麼變否定句
你好,要想學好英語,你要不斷積累,這樣你就可以將英語學好。我幫你總結幾點,供你參考,謝謝。
一、當肯定句的謂語動詞是be或由be構成時,改為否定句,應在be後面加not。二、當肯定句的謂語動詞只是行為動詞時,改為否定句,要用「助動詞do(does,did)+not+動詞原形」。三、當肯定句的謂語是由「情態動詞can,may,must等+動詞原形」構成或由「助動詞will,have,had等+動詞原形(或動詞的現在分詞、過去分詞)」構成,變否定句,要用「情態動詞/助動詞+not+動詞原形(或動詞的現在分詞、過去分詞)」構成。四、當肯定句的謂語是have時,分兩種情況:1.當have作「有」講時,變否定句的方法有:a.由have
+not
+其它;b.由have
+no
+其它;c.由
don't(doesn't,didn't)+have+其它。2當have既不當作「有」講,也不是助動詞,而是行為動詞時,改為否定句,要用「助動詞do,
does,did等+not
+have」構成。五、當肯定句中含有情態動詞have(has)to時,改為否定句,有兩種構成法,一種藉助do,一種不藉助do(僅限於現在時和過去一般時),多數人用第一種形式。六、當肯定句中含有too,also時,改為否定句,須將too,
also改為either。七、當肯定句中含有always時,改為否定句,須將always改為never。八、當肯定句中含有already時,改為否定句,須將already改為
yet。九、當肯定句中含有nearly時,改為否定句,須將nearly改為
hardly。
如果能對你有所幫助,我就高興。
② 五年級英語肯定句變否定句
1. 動詞be的否定式
動詞be根據不同的人稱和時態可以有am, is, are, was, were等不同形式,可用作連系動詞(表示「是」、「在」等)和助動詞(用於構成進行時態和被動語態等),但不管何種情況,構成否定式時,一律在其後加not:
I』m old, but you』re young. 我老了,但你還年輕。
→I』m not old, but you』re not young. 我還不老,但你不年輕了。
He was reading and I was writing. 他在讀,我在寫。
→He was not reading and I was not writing. 他沒有在讀,我沒有在寫。
2. 動詞have的否定式
動詞have根據不同的人稱和時態可以有have, has, had等形式,可以用作實意動詞和助動詞,分以下情況討論:
1. 用作實意動詞表示狀態,如表示擁有、患病或用於have to表示「必須」等,在構成否定式時可以直接在其後加not,也可根據情況在其前使用don』t, doesn』t, didn』t:
He has a car. 他有輛小汽車。
→He hasn』t a car. / He doesn』t have a car. 他沒有小汽車。
He had some dictionaries. 他有一些詞典。
→He hadn』t any dictionaries. / He didn』t have any dictionaries. 他沒有詞典。
You have to go with him. 你必須同他一起去。
→You haven』t to go with him. / You don』t have to go with him. 你不必同他一起去。
【注】have to構成否定式時以在其前加don』t等較為常見。
2. 用作實意動詞表示動作,如表示「吃(=eat)」、「喝(=drink)」、「拿(=take)」、「收到(=receive)」、「度過(=spend)」等,構成否定式時不能直接在其後加not,而應根據情況在其前使用don』t, doesn』t, didn』t:
He had some cake for breakfast. 他早餐吃了些蛋糕。
→He didn』t have any cake for breakfast. 他早餐沒有吃蛋糕。(不能用had not)
We had a good holiday. 我們的假期過得很愉快。
→We didn』t have a good holiday. 我們的假期過得不愉快。(不能用had not)
3. 用作助動詞構成完成時態,其否定式只能在其後加not:
I have read the book. 我讀這本書。
→I have not read the book. 我還沒讀這本書。
He had left when I arrived. 我到達時他已離開了。
→He hadn』t left when I arrived. 我到達時他還沒有離開。
3、情態動詞的否定式
情態動詞的否定式一般在其後加not構成:
I can finish the work in an hour. 我能在1小時內完成這工作。
→I can』t finish the work in an hour. 我不能在1小時內完成這工作。
You must go with us. 你必須同我們一起去。
→You mustn』t go with us. 你不能同我們一起去。
We should help them. 我們應該幫助他們。
→We shouldn』t help them. 我們不必幫助他們。
4、實意動詞的否定式
一般實意動詞的否定式,通常應根據不同時態和人稱在實意動詞之前加don』t, doesn』t, didn』t等:
He works in a bank. 他在一家銀行工作。
→He doesn』t work in a bank. 他不是在銀行工作。
We often hear from her. 我們經常收到她的來信。
→We don』t often hear from her. 我們不經常收到她的來信。
I met her at the station. 我在車站見到了她。
→I didn』t meet her at the station. 我在車站沒見到她。
③ 肯定句改否定句英語
肯定句和否定句
含否定詞的句子稱為否定句(Negative Sentence),不含否定詞的句子就稱為肯定句(Affirmative Sentence)。例如:
例:Mr. Walker is an Englishman.
(華克先生是英國人。——肯定句)
例:He is not an American.
(他不是美國人。——否定句)
簡單地說,表達事物的「Yes」這一面的句子就是肯定句,「No」的一面的就叫做否定句。
傳統的英語入門都是先學肯定句,然後再學肯定句的反面,亦就是否定句。否定句的表達方式基本上有下面的兩種。
(1)使用副詞否定詞「not」,例如:
(a)be,have為主要動詞:
例:I am not a good swimmer.
(我不是一個游泳的好手。)
例:He was not at home yesterday afternoon.
(昨天下午他不在家。)
例:I have not much money.
(我沒有很多錢。)
例:He has not many friend here.
(在這里他沒有很多朋友。)
解說「be/have +not」常縮短成一詞,尤其是日常談話更是如此。例如:
例:You aren't [a:nt] a friend of his, are you ?
(你不是他的朋友吧,是不是?)
例:He isn't [>!znt] my brother.
(他不是我的兄弟。)
例:I wasn't [>w&znt] there at that time.
(當時我沒有在那兒。)
例:There weren't [w+:nt] many people at the party yesterday.
(昨天沒有很多人參加宴會。)
「am +not」不是「amn't」,而是「aren't」或「ain't[eint]」,例如:
例:I ain't ready.
(我還沒准備好。)
例:I am very nice to you, aren't I?
(我對你很不錯,是不是?)
美國人用「ain't」很隨便,應該是「are not,is not,have not,has not」的地方,他們也會「ain't」一下就帶過去,宜注意。
下面例句是「have not,has not」的縮短形。
例:I haven't[>h$vnt] a headache.
(我沒有頭痛。)
例:He hasn't[>h$znt] come yet.
(他還沒來。)
(b)be,have為助動詞
例:You aren't going to go to her birthday party, are you?
(你不打算參加她的生日宴會,是不是?)
例:It isn't raining outside.
(外面沒有在下雨。)
例:She wasn't asked to speak at the meeting.
(她沒有被請求在會上講話。)
例:I haven't done anything wrong to her.
(他沒有做對不起她的事。)
例:He hasn't yet paid the money.
http://www.oh100.com/a/201105/29.html
(他尚未付錢。)
be+ V -ing(進行時),be +P.P.(過去分詞)(被動詞態),have(has,had)+P.P.(完成時)等的「be,have(has,had)」皆為助動詞。例1的「be going to …」在學校文法中也常被視為助動詞。
(c)「助動詞+V」時
動詞帶有助動詞「will,shall,can,may,must,need,dare,ought to,used to,had better」等時,將「not」置於助動詞與主要動詞之間。例如:
例:I will not do it again.
I won't[wount] do it again.
(我不願意再做這種事。)
例:The old man cannot find his way home.
(那個老人找不到回家的路。)
例:I couldn't sleep last night.
(昨夜我無法入睡。)
例:You ought not to swim in the river.
(你不應該在河裡游泳。)
例:You had better not tell her everything.
(你最好不要樣樣事情都告訴她。)
註:「can」的否定形式是「cannot or can't」,不可寫成「can not or cann't」。
(d)使用助動詞「do」的否定句
一般動詞的否定句通常使用助動詞「do」,句式如下:
句型 do(does, did)+not + V(原形動詞)
例:I don't know her very well.
(我並不很了解她。)
例:He doesn't like Chinese tea very much.
(他並不很喜歡中國茶。)
例:She didn't come to school this morning.
(今天早上她沒有來上學。)
例:Don't believe him.
(不要相信他的話。)
註:「have」表達「有」以外的意義時,其否定句通常使用助動詞「do」,例如:
例:Usually I don't have (=eat) breakfast on Sunday morning.
(通常星期天早上我不吃早餐。)
例:She doesn't have (=drink) coffee for breakfast.
(她不把咖啡充作早餐喝。)
例:We didn't have (=enjoy) a good time there yesterday.
(昨天我們在那裡玩得不愉快。)
不過美式英語「have」作「有」的意義使用時也如一般動詞使用助動詞「do」,例如:
例:I don't have brothers.
(我沒有兄弟。)
例:We didn't have time enough to finish the work.
(我們當時沒有足夠的時間完成那件工作。)
(2)使用「not」以外的否定詞
「not」以外的否定詞有:
(a)副詞:never,seldom,hardly,little,neither,etc.
例:She never comes to school late.
(他上學從不遲到。)
例:She seldom comes to see me.
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(她不常來看我。)
(b)形容詞:no,few,little,etc.
例:I have no brothers.(=I don't have brothers.)
(我沒有兄弟。)
例:He has few friends in Hong Kong.
(他在香港幾乎沒有朋友。)
(c)代詞:nothing,nobody,none,etc.
例:I know nothing about computer.
(對於電腦我一竅不通。)
I found nobody about computer.
(在那棟房子里我沒看到任何人。)
④ 英語中怎麼將肯定句改成否定句啊要詳細點的,最好把各種情況考慮到。
一.肯定句變成否定句
如果句中有be動詞is,am,are
或情態動詞must,can等,在其後面直接加not,
she
is
your
mother.
she
isn't
your
mother
2.如果沒有be動詞或情態動詞,加don't,does't或did't
she
likes
playing
football.
she
doesn't
like
playing
football.
二.肯定句變成疑問句
變成一般疑問句
如果有be或情態動詞動詞就把他們提前,
she
is
your
mother.
is
she
your
mother?
2.如果沒有就在前面加do的某種形式,第三人稱用does,過去時用did
she
likes
playing
football.
does
she
like
playing
football?
變成特殊疑問句,
要具體分析,看是對什麼進行提問,簡單來說,
1.對人提問用who,
she
is
your
sister.who
is
your
sister?
2.對事物用what,
the
book
is
on
the
desk.
what
it
is
on
the
desk?
3對時間用when,
she
will
come
back
tomorrow.
when
she
will
come
back?
4.對頻率用how
often等等
i
play
football
everyday.
how
often
does
you
play
footall?
⑤ 英語、、、英語中的肯定句變否定句的規則
1.在一般現在時和一般過去時中,1)在be後加not.
He is here.否定:He isn't here They were very happy.否定:They weren't very happy
如動詞是其它的實意動詞:
2)如是動詞原形則在前加助動詞do 再加not;
They do sports every day.(do在這里是「做」的意思,是實意動詞,不能直接加not否定)
否定:They don't do sports every day.
3)動詞是第三人稱單數則在前加助動詞does 再加not; ,且單三還原成原形
He gets up at six.否定:He doesn't get up at six
4)動詞是過去式,則在前加助動詞did再加not;
We visited the old man yesterday.否定:We didn't visit the old man yesterday.
2.如果謂語動詞是情態動詞,則在情態動詞後加not.情態動詞也是一種助動詞
We can dance very well.否定:We can't dance very well
3.如果謂語動詞是其它時態,則在第一個助動詞後加not
They are working hard.(be dong 中的be幫助構成了時態,是助動詞)
否定:They are not working hard.
He has finished his homework.(have done 中的have幫助構成了時態,也是助動詞)
否定:He has not finished his homework.
4.使用no,hardly,seldom,never,nobody,few,little 等否定詞
Nobody is in the room.=There is not anybody in the room.
⑥ 五年級英語如何把肯定句改為否定句
變特殊疑問句·加疑問詞【who,whose,why,which,when,what】再加助動詞【do,does】或be動詞【am,is,are】或情態動詞【must,can·····】再加一般疑問句。加問號【很重要】
變一般疑問句,把be動詞往前提,把句子中有的可以造抄,最後加問號。【很重要】
但多數情況要你自己去靈活應對!加油!^_^~
⑦ 英語中把肯定句改成否定句的規則
否定句只是句子的意思變成了否定,並使更改句子的結構和時態。所以如果進行時ing的話,當然不能還原了。時態不變原則。
1 時態不變
2 主動被動不變
3 人稱不變
4 結構不變(不定式、從句、情態動詞。。。)