The engineers had __ trying to solve the mechanical problems
The engineers had __ trying to solve the mechanical problems of the railway system
the engineers had____trying to solve the mechanical problems of the railway system
a such hard time
b such a hard time
c so hard time
d a so hard time
为什麼呢?
the engineers had____trying to solve the mechanical problems of the railway system
a such hard time
b such a hard time
c so hard time
d a so hard time
为什麼呢?
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Abramovich 幼苗
共回答了10个问题 举报
因为such 修饰名词的用法是， such+ a/an + adj + 单数名词
such + adj + 复数名词
而 so 是副词，修饰adj 或副词 用法是 so + adj / adv 或so +adj + a /an + 单数名词
such + adj + 复数名词
而 so 是副词，修饰adj 或副词 用法是 so + adj / adv 或so +adj + a /an + 单数名词
1年前
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