来自曹同川的问题
havebeendoing的用法,Myborhterhasworkedinthatfactorysincetwoyearsago问:不是havebeendoing吗,为什么会是hasworked,余很笨,
havebeendoing的用法,
Myborhterhasworkedinthatfactorysincetwoyearsago
问:不是havebeendoing吗,为什么会是hasworked,余很笨,

