You can borrow my car____you promise not to drive too fast.A.unless B.if C.in case D.as long as 为啥不选B,

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You can borrow my car____you promise not to drive too fast.A.unless B.if C.in case D.as long as 为啥不选B,

You can borrow my car____you promise not to drive too fast.A.unless B.if C.in case D.as long as 为啥不选B,
You can borrow my car____you promise not to drive too fast.
A.unless B.if C.in case D.as long as 为啥不选B,

You can borrow my car____you promise not to drive too fast.A.unless B.if C.in case D.as long as 为啥不选B,
if 和as lobg as 引导条件状语从句的区别 在于 后者 强调条件的唯一 性
所以 as long as = if only 只要
本句 是 as long as
如果 选B if 最好加上 only
在做此类练习中 如果选项中 二者 同时存在 并且都是引导条件状语从句
一般都是选as long as

B/D两者皆可,但as long as更佳。