When my daughters reached the third and fourthgrades, I occasionally allowed them to walk to and from school alone if the weather permitted.
我的女儿们上三四年级的时候,如果天气好的话,我偶尔允许她们自己走着上下学。
2
The study was designed to examine the relationships of phonological awareness and syntactic awareness with the reading comprehension performance of primary school students of second and fourthgrades.
本文考察了小学二年级和四年级儿童句法意识、语音意识与阅读理解成绩之间的关系。
3
The study found that strong teachers in the fourth through eighth grades raised the skills of their students in ways that would last for decades.