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小博士：仔细观察下面的基数词和对应的序数词的区别和变化，你会发现这种变化是有规律的，你能归纳出来吗？请根据规律填出所缺的基数词和序数词，并特别注意黑体字的词。
one | first | eleven | eleventh | twenty-one | twenty-first |
two | second | twelve | twelfth | twenty-two | twenty-second |
three | third | thirteen | thirteenth | twenty-three | twenty-third |
four | fourth | fourteen | fourteenth | twenty-four | ______ |
five | fifth | fifteen | ______ | twenty-five | twenty-fifth |
six | sixth | sixteen | sixteenth | twenty-six | twenty-sixth |
seven | ______ | seventeen | seventeenth | twenty-seven | twenty-seventh |
eight | eighth | eighteen | eighteenth | twenty-eight | twenty-eighth |
nine | ninth | nineteen | nineteenth | twenty-nine | twenty-ninth |
ten | tenth | twenty | twentieth | thirty | thirtieth |
thirty-one | thirty-first fortieth ninetieth | hundred | hundredth | ||
forty | thousand | thousandth | |||
ninety | million | millionth | |||
我找到规律了！请看：
1 英语序数词1～19，除first，second，third等特殊形式外，其余的一般是在相应的基数词后加-th构成。
2 有几个序数词加-th时拼法不规则，要注意。如fifth，________ ________ ________。
3 十位整数的序数词的构成方法是先将其基数词的词尾“ty”中的“y”改为“i”，再加“-eth”。如________。
4 基数词“几十几”变成序数词时，只需将个位数变成序数词，十位数不变。如________。
查看习题详情和答案>>根据中文意思完成句子
【小题1】 我喜欢北京的秋天，你呢？
I like the autumn in Beijing, ____________ you?
【小题2】多吃蔬菜水果对健康有好处。
____________ your health to eat more vegetables and fruit.
【小题3】你愿意参观我们的新学校吗？
____________ to visit our new school?
【小题4】哥哥花了一个星期教我弹吉他。
____________to play the guitar.
【小题5】妈妈常常告诉我，既不要炫耀自己，也不要轻视别人。
Mom often ____________.
| |||||
阅读短文，然后根据要求完成任务。
Do you carry too much on the way to school or home? Don’t worry．Try e-readers (电子阅读器) and say goodbye to your heavy schoolbag．
An e-reader has the memory space to hold hundreds of books．So people want to (A)扔掉沉书包 and read with small, light e-readers．For example，Cushing Academy，a high school in Massachusetts，USA，replaced (替换) most of the 20，000 books in (B) its library last summer．Teachers and students will use e-readers instead．
Most e-readers are thin and weigh less than 500g．They can download (下载) an e-book in 60 seconds．“It's (C) so easy．You can have a lot of books right at your fingers!” said Meghan Chensusky．
Chinese schoolchildren are also trying e-readers．At the Shanghai World Expo (世博会)，an e-schoolbag is now on show．It is a special e-reader．Students can use it to download textbooks from the school servers (服务器)．(D)It can also send and receive homework．Some Schools in Beijing and Shanghai have tried this e-schoolbag for a few years．“It’s excellent．I (E)don't have to carry a heaw schoolbag anymore，”said Xiao Qi，15，Beijing．
New e-readers are not just for reading．They have Wi-Fi and multimedia (无线电视和多媒体)．Parents worry that these may hurt their children's study habits． “I think Wi-Fi is not necessary for kids，”said Zeng Wenwen，43， Beijing．
1.将文中划线部分(A)译成英语:________________
2.文中划线部分(B)指代的是:________________
3.写出文中划线部分(C)和(E)的同义词或近义词：________ ________
4.将文中划线部分(D)改写为：Homework can also__________ _________and received through it．
5.从文中找出两个修饰或描写e-reader的形容词：________ ________
查看习题详情和答案>>
根据中文意思完成句子
1. 我喜欢北京的秋天，你呢？
I like the autumn in Beijing, ____________ you?
2.多吃蔬菜水果对健康有好处。
____________ your health to eat more vegetables and fruit.
3.你愿意参观我们的新学校吗？
____________ to visit our new school?
4.哥哥花了一个星期教我弹吉他。
____________to play the guitar.
5.妈妈常常告诉我，既不要炫耀自己，也不要轻视别人。
Mom often ____________.
查看习题详情和答案>>