since 既然引導(dǎo)什么從句
回答
愛揚(yáng)教育
2022-03-09
since 引導(dǎo)時(shí)間狀語從句或愿因狀語從句.
引導(dǎo)時(shí)間狀語從句,主句用現(xiàn)在完成時(shí)態(tài),從句用一般過去時(shí)態(tài).
時(shí)間狀語從句：(常用于現(xiàn)在完成時(shí)或過去完成時(shí))自...以來,從...至今
Its been ten years since they married.
引導(dǎo)時(shí)間狀語從句,主句用現(xiàn)在完成時(shí)態(tài),從句用一般過去時(shí)態(tài).
時(shí)間狀語從句：(常用于現(xiàn)在完成時(shí)或過去完成時(shí))自...以來,從...至今
Its been ten years since they married.
擴(kuò)展資料
原因狀語從句：既然;因?yàn)?由于
He must have taken the book since it isn't here.
他一定是把書拿走了,因?yàn)闀巡辉谶@里了。
since 引導(dǎo)時(shí)間狀語從句或愿因狀語從句.
引導(dǎo)時(shí)間狀語從句,主句用現(xiàn)在完成時(shí)態(tài),從句用一般過去時(shí)態(tài).