She has studied English since she was ten.(因为有since,所以用has studied,也可以用 has been studying,表示她从十岁开始就学习英文到现在,不曾间断）
She began to study English when she was ten.（因为这是表示过去的事情,所以用简单过去式,began)
怎么写?——She （study）English since she was ten.She （begin）to study English when she was ten.
是现在完成时?
She ————（study）English since she was ten.She —————（begin）to study English when she was ten.
两个空空、
She has studied English since she was ten.(因为有since,所以用has studied,也可以用 has been studying,表示她从十岁开始就学习英文到现在,不曾间断）
She began to study English when she was ten.（因为这是表示过去的事情,所以用简单过去式,began)