牛津阅读树4级词汇占比

下面的是词频表格，单词的单复数会统计成两个单词，动词的不同时态也是作为一个新单词统计。

牛津阅读树4级词汇

下面是牛津树4级主干系列和DD系列中其中两本内容的比较（31.Floppy and the puppets是主干的一本内容，40.A Walk in the Sun 是Decode and Develop系列中的一本）。肉眼看不到明显难度相差了，要分清阅读难度的话，可能只有分析词汇的难度，句型，每页单词数，每本单词数这些才能区分了吧。也就是Lexile，AR这些英语阅读难度等级的事了。

31.Floppy and the puppets

The children had some puppets.

"This puppet is Dad," said Biff. "And this puppet is Mum."

"This is the dog," said Kipper.

Floppy was not happy.

He did not like the puppets.

Floppy barked and barked.

"The puppets upset him," said Mum.

Floppy got into his basket.

He fell asleep and had a dream.

Oh no! Mum and Dad were puppets.

So were the children.

The Biff puppet gave Floppy bits of wood to eat.

Then the children played with the dog puppet.

Floppy was not happy.

Floppy sat up . It had a bad dream.

Floppy was happy to wake up.

40.A Walk in the Sun

The children went for a walk.

They were near a farm.

"I can hear a hen! " said Lee.

" That is a rooster, not a hen, " said a man in big boots.

Further along, Kipper saw a sheep.

"The farmer is giving that sheep a haircut! " he said.

"He is shearing its coat, not cutting its hair., " said the man.

"We need to go past that farmhouse, " said Mum.

"That is a barn, not a farmhouse, " said the man.

"This way, " said the man.

"I am not sure that is right, " said Lee.

"That is a bull, not a cow! "

It was a big bull with long horns!

"Run! " they all shouted.

"Go up that oak tree!" shouted Mum.

The man went up the tree.

"This is a beech tree, not an oak, " said the man.

牛津树书籍

再加上一点数据，牛津4每本书平均154个单词，每页平均154/24=6.42词。

每本书单词数跟RAZ F相当了，每页单词数倒是跟RAZ D相当。根据下面表的AR值看我觉得低了，估计应该能到D-E之间了。后面的级别也是每本书的单词量明显比RAZ这些nonfiction类的书籍都多，好像这也是一个固有特点，同级别的英语绘本中的fiction类都比nonfiction类词汇多。加上文章开头我们说的那个特点，这也是每个英语阅读分级体系中已经注意到的问题吧。

具体数据大家可以看下面表格的数据自行对比。

牛津阅读树4级的AR值，Lexile蓝思值

RAZ各级数据表：

而对于这个牛津阅读树4级的适合小学哪个年级阅读的？

因为从上面的数据看，牛津树4级的话相当于RAZ D-E（DD系列属于E级多）之间，对于美国的话是G1初期（即美国小学一年级），对应国内小学的话，适合二年级到三年级（一年级学英语的），四年级到五年级（三年级学英语的）。DD（Decode and Develop）系列是比较难的，基本可以对应三年级，五年级了。

RAZ对应国内各个年级难度

需要需要了解前面牛津树1-3级别的数据和词汇表的，可以看我们之前更新的文章，需要后面级别的词汇和具体分析数据，可以留意后续文章。

牛津树1

牛津树2

牛津树3

需要寻找此阶段适合看那些英文绘本的，也可以在我们之前更新的文章中找到，有绘本推荐。如果是其他分级读物的话，只要根据上面表中的的英语分级体系，寻找同一个级别的就可以了。

绘本推荐

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