persevere
persevere in和persevere with的用法？
in和persevere with的用法？
to persevere in education development assessment.坚持发展性教学评价。
2.Taking system renovation as the motivation, persevere in sustained development.以体制创新为动力，坚持可持续发展。
have to persevere with difficult students.对难教的学生你必须坚持诲人不倦的精神。
difficulty同义词是什么？
！difficulty同义词是hardness ，它的中文意思是n. [物] 硬度；坚硬；困难；冷酷
In America, people dont normally admit to the hardness of life.在美国，人们通常不承认生活的艰辛。
The hardness and deadness are from within.那冷酷与木然是从内心发出的。
difficulty短语？
1/difficulty释义：
n. 困难，困境
2/例句：
If you encounter difficulties, you can ask me for help.
你遇到困难可以找我帮助。
3/difficulty短语有：
with difficulty困难地；吃力地
have difficulty有困难
in difficulty处境困难
degree of difficulty难度系数，难度
have difficulty in对…有困难；在某方面有困难
difficulty什么情况下有复数形式什么时候是不可数名词？
difficulty n.困难,艰难,难事；有可数名词和不可数名词两种用法。
①用作不可数名词，意为困难、艰难,常用在以下句型中
have no/find(some,any,much) difficulty with sth./(in) doing sth.
There is no (some,any,much) difficulty (in) doing sth.
I had no difficulty in learning English.
There was much difficulty (in) explaining it to him.
②用作可数名词。表示具体的困难，意为难事,难点,困境,难处
This book is full of difficulties.
In face of so many difficulties,we never appeared to be afraid.