一篇英语短文改错,假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文.文中共有10处错误,美剧中最多有

一篇英语短文改错,
假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文.文中共有10处错误,美剧中最多有两处.每处错误仅涉及一个单词的增加、删除或修改.
增加：在缺词处加一个漏词符号（∧）,并在此符号下面写出该加的词.
删除：把多余的词用斜线（ \ ）划掉.
修改：在错的词下划一横线,并在该词下面写出修改后的词.
【注意】1、每处错误及其修改均仅限一词；
2、只允许修改10处,多者（从第11处起）不计分.
Sleep is part of your daily activity cycle.But how many you sleep and when and how
deeply you sleep is determined by many factors.Generally speaking,the young you are,the
more you sleep and that the more deeply you sleep.Newborn babies sleeping about 16 hours
each day cycle.They sleep as much during day as at night.During the first year of life,the
number of sleep a baby needs decreases by two hours or more.One recently study showed that
by six months of age,80% on the babies are sleeping through the night and taking short naps
in the daytime.By age two,children sleep about 12 hours a day,included about 90 minutes of
daytime naps.By adolescence and early adulthood,the amount of daily sleep has dropped to
about 8 hours.
请修改,并解释原因,

更正在括号处标明,总共十处错误,保证准确率!

Sleep is part of your daily activity cycle. But how (many改成much) you sleep and when and how deeply you sleep (is改成are) determined by many factors. Generally speaking, the (young改成younger) you are, the more you sleep and (去掉that) the more deeply you sleep. Newborn babies (sleeping改成sleep) about 16 hours each day. They sleep as much during (加入the) day as at night. During the first year of life, the (number改成amount/quantity) of sleep a baby needs decreases by two hours or (more改成so). One (recently改成recent) study showed that by six months of age, 80% of the babies are sleeping through the night and taking short naps in the daytime. By age two, children sleep about 12 hours a day, (included改成including) about 90 minutes of daytime naps. By adolescence and early adulthood, the amount of daily sleep has dropped to about 8 hours.

解释：
1. how many修饰可数名词,不能表示程度,how much可以表示程度；
2. 主语为多个从句并列,为复数概念,所以主句谓语动词必须用复数形式are；
3. 固定句型：the + 比较级..., the + 比较级...,意思是“越...,...就越...”.
所以用young的比较级younger；
4. 非从句,也就无须引导词that；
5. 单独的现在分词sleeping不能做句子谓语,sleep可以做谓语；
6. 固定短语：during the day/daytime = in the day/daytime 在白天
7. sleep为不可数名词,但是number只能修饰可数名词,所以改用amout或quantity；
8. 固定短语：or so,意思是“上下,左右”,类似于about,但是其位置放在“数词 + 名词”的后面；
9. 形容词recent做定语修饰名词study；而recently是副词,不能做定语而是做时间状语；
10. 固定短语：including + 宾语 = 宾语 + included,意思是“包括...在内”；



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