早教吧 育儿知识 作业答案 考试题库 百科 知识分享

求英语大手解决困惑itisnodoubttodosthitisnodoubtthat有这种用法吗2.since和as的表原因的区别它们两个必须放在句首吗

题目详情
求英语大手解决困惑
it is no doubtto do sth
it is no doubtthat
有这种用法吗 2.since和as的表原因的区别 它们两个必须放在句首吗
▼优质解答
答案和解析
it is no doubtto do sth 无此用法.
第二句应为there is no doubtthat
since 和as 都可表原因.since多用于解释显而易见的原因,多解释为“既然”,比后者常用.放句中也可以.
I don not have to go since he did not ask me to.
I went to bed early,as I was tired to death.