(一)改写一般疑问句:
(1)原句中有be动词的,将be动词提前,其他顺序不变。
例如:Thisisacat.变为Isthisacat?
(2)原句中有情态动词的(can/may/shall/would)将情态动词提前,其他顺序不变。例如:Hewouldlikeapie.变为Wouldhelikeapie?
(3)原句中是一般动词的,在句首加助动词do或dose(用于主语是第三人称动词单数的句子),其他顺序不变。例如:Iplaytheguitar.变为Doyouplaytheguitar.
(4)原句中的some变any。
注:以情态动词开头的一般疑问句,并且要求对方做肯定回答的`some不变。
(5)原句中的第一人称改为第二人称。例如:Iamanurse.变为Areyouanurse?
(6)以dose开头的一般疑问句,原来动词的第三人称单数形式要变回原形。例如:Hereadsastorybook.变为Dosehereadastorybook?
(二)改写否定句:
(1)原句中有be动词的,直接在be动词后面加not。例如:Itisadog.→It’snotadog./Itisn’tadog.
(2)原句中有情态动词的,直接在情态动词后加not。
例如:Iwouldlikeahotdog.→Iwouldnotlikeahotdog.
(3)原句中是一般动词的,在一般动词前加don’t或doesn’t(用于主语是第三人称单数的句子),doesn’t后面用原型。例如:Iseethreehamburgers.→Idon’tseethreehamburgers.
原句中的some变any例如:Ihavesomebreadan
dmilk.→Idon’thaveanybreadandmilk.
(4)以let开头的祈使句,如果是letus或letme,直接在其后加not;如果let后面其他人称代词宾格(you、him、her、them、it)就在let后面加助动词don’t。例如:Letusgotothepark.→Letusnotgotothepark.再如:Letthemdohomework.→Don’tletthemdohomework.
(三)对划线部分提问:
对划线部分提问,就是先把一个陈述句的划线部分去掉,然后变为一个特殊疑问句:一是特殊疑问句+一般疑问句;
二是特殊疑问句+陈述句(对主语或主语的定语提问,therebe结构除外)
⑴划线部分是人,用who提问。
⑴划线部分是主语,用who提问,who后面的动词要用第三人称单数形式。如:Whois;Wholikes;Whohas?
方法:who+原句的剩余部分
例如:①HelenandMikearelisteningtomusic.
→Whoislisteningtomusic?
②Ihavesomemodelplanes.
→Whohasanymodelplanes?
⑵划线部分是表语,用who提问。
方法:Who+剩余部分的一般疑问句形式
⑵划线部分是事或者物,用what提问。
方法:what+剩余部分的一般疑问句形式。
注:如果原句是therebe句型,直接用What’s+地点状语来提问。例如:①Wewouldliketobuysomethingsforaparty.
→Whatwouldyouliketobuyforaparty?
②Therearealotofcakesintheplate.
→Whatisintheplate?
⑶划线部分是物主代词或名词所有格,用Whose提问。
方法:⑴划线部分是主语的定语时,Whose+剩余部分
例如:Ourclassroomisbright.
→Whoseclassroomisbright?
⑵划线部分是表语或表语的定语时,Whose+剩余部分的一般疑问句形式例如:①ThewomanisSuYang’steacher.
→Whoseteacheristhewoman?
注:对某部分的定语提问,被修饰的部分跟随特殊疑问句往前提②ThispurseisYangLing’s.
→Whosepurseisthis?
⑷划线部分是地点,用where提问。
方法:where+剩余部分的一般疑问句形式
例如:TheyarehamingaMathslessonintheclassroom..
→WherearetheyhavingaMathslesson?
⑸划线部分是“多少”,用howmany或howmuch提问。
方法:⑴句中是可数名词的用Howmany+剩余部分的一般疑问句形式例如:Therearefifteentreesintheplayground.
→Howmanytreesarethereintheplayground?
⑵句中是不可数名词的用Howmuch+剩余部分的一般疑问句形式例如:Ihaveaglassofjuiceforbreakfast.
→Howmuchjuicedoyouhaveforbreakfast?
⑹划线部分是时间,用when或whattime(具体的几时几分)提问。方法:⑴when+剩余部分的一般疑问句形式
例如:SuYangandSuHaiareathomeonSundaymorning.
→WhenareSuYangandSuHaiathome?
⑵问具体的时间直接用Whattimeisit?或What’sthetime?问
例如:It’sthreeforty-five.
→Whattimeisit?或What’sthetime?
时空隧道真的存在吗?我们又可能回到过去或跨越未来吗?如果一个孩子告诉我这些,我一定夸她想象力很好;但是霍金先生对此做出的解释、思考、和想象却让我对此产生了疑问和猜想——穿越又可能实现吗?
“在科学界,时间旅行一度被认为是歪理邪说。过去因为担心有人会把怪人的标签贴在自己身上,我对这个问题常常避而不谈,但现在,我不再那么谨小慎微了。我对时间痴迷已久,如果有一台时间机器,我会去拜访风华正茂的玛丽莲梦露,或是造访将望远镜转向宇宙的伽利略,或许,我还会走到世界的尽头,破解整个宇宙湮灭之谜。”——斯蒂芬霍金
这段轻松的文字出自于霍金之口。这种话确实容易让人认为他是个怪人。我想霍金用他的大脑思考着无际的宇宙,他乐于思考,这说明他不仅仅是个怪人。
霍金向我们提出了第四维的概念。只要是认真学习的孩子都知道,我们身边的实体在一个三维的空间,而第四维又是一个怎样的世界呢?这是一种关于时间的维度。第四维的通道或许可以实现时间旅行,也称为穿越。
霍金先生提出了三种穿越途径。
1.虫洞。虫洞是什么?其实虫洞就在我们身边。这又不得不说到比分子、原子还要小的空隙——量子泡沫,虫洞就存在与“量子泡沫“之中,小到肉眼无法看见。万物都存在虫洞,霍金认为这同样适用于时间,假使我们能捕获一个虫洞,将它放大到足以使人类甚至宇宙飞船从中穿过。那么,时间旅行就有了希望。
2.黑洞:天然的时间机器。黑洞比整个银河系还要重,正因它如此的重,也许可能让时间滞缓;但是问题就在于,接近超大黑洞的危险性!
3.光速。超越光速的速度也许可以突破时间限制;但是这些猜想若得已实现,有也许会违反宇宙规律。这就称为悖论。
所以,回到过去的旅行应该不会上演,至少现在没有这种可能。但是,我却极为支持霍金的思考。他不仅是个怪人,也是个奇人。他的信念,他的思考也许让未来的人们正惊叹着。历史总是出乎人意料之外的。生活在原始社会的人类如何想到我们现在的生活,就如同我们谁也不能预测到长久的未来。于是,我们对未来充满想象。
许多时候,我们对某事有了想象,却无法同霍金一样怀着强烈的好奇和坚定的毅力去探究未知,或许说我们对未知的恐惧太深。
但我还是要说,坚持自己的想象,没有人可以绝对地说你是错的,至少你比凡人多一颗愿意探索的心。
也正是因为有许许多多像霍金一样敢于探索的科学家,不,不应该只局限于科学家,应是所有勇于求索为人类做出贡献的所有人,是他们推动历史的车轮滚滚前进。向他们致敬!
Children's finally here, it is our holiday, but imagine the children also accompanied by together, everybody is more excited.
Children on this day, white clouds float over the blue sky, the children also have made a hot air balloon, they sit together on yourself a hot-air balloon, extremely happy! Balloon flying high, and finally flew to the sky, the children are in the sky holiday, the children sit on clouds, umpa jump, like a frisky little monkey.
Playing children, suddenly to rain cats and dogs, the children of the balloon has stalled, baiyun sister swept away by the wind, the children fell into despair. Is a time of crisis, a group of dragonflies sister and sister flew caught the children, and the safety of the children to the ground.
On the ground, only butterflies woven into a rainbow "lei", the children wear a wreath, some like a fairy, some like a warrior.
Play tired, the children fell asleep between full of fragrance of flowers.
Children's good play my imagination, to one day be able to live in such a children's day.
What our life will be like in the future?When I was a little boy,I always asked myself this question.At that time,I had no idea what Internet was.But now,we use it every day.We can't live without it.Internet is become so popular and so convenient.
Just forget it.What our life will be like in the future?For example,in ten years.I think that in ten years our life will be much more colorful,our computer will be much powerful,and we can do almost everything on the internet including seeing a doctor.What about your future life ?Will you share with me?
Sometimes I dream about life in the future. What will it be?
Perhaps some people will go to the moon for a holiday or even live on the moon,and some scientists will build cities under the sea to make people live there. We can have a medical examination or do some shopping without leaving our homes,which makes the life more convenient. Maybe we will also do some shopping and work at home.
And I'm sure there'll be more educational programmes on the radio or TV or by the Intemet or videophones,so perhaps some children won't need to go to school every day. They'll study at home.
In the future,all electric equipment at home is under the con-trol of computers. People can learn about the situation of the house by working on the computer at the office. No people like doing housework. Maybe each family will have a robot. Every day we can tell the robot what to do-shopping,housework and so on. believe the dream will come true some day.
So people call it Mountain City。 In Chong Qing,I went to the Red Stone Center, to see the places which the prisoners lived in the past。 It is a terrible and awful trip。 There are a lot of dogs, and soldiers with guns near the prisons。 And most of the prisons are good, they didn't want to tell the bad people where the other people were。 They lived in very small houses。 No good food to eat, no good water to drink。They had only twenty minutes to stay out side per day but they still said nothing。
I think they are the heros in that century。 I will follow their spirit。
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