Question

Since用什么提问？

They have been worker since 1990对since 1990提问

Answer 1

对于since引导的短语以及从句，另外还有for+时间段所构成的短语都应该用how long来提问。
How long have they been workers?

双语例句：

Since then, I have the appetite从那时起，我有了食欲。

Since I know him自我认识他以来。

Or maybe not, since they only keep it for one month或者，也许不会，因为他们只保持它为一个月。 

扩展资料：

短语搭配：

Since many 出自多 ; 来自多 ; 外射门自多

Even since 自从 ; 正在翻译 ; 从那以后

Since childhood 自幼 ; 自小 ; 自小时候

since both 因为这两种 ; 因为两者

Collaboration since 自协作 ; 自从协作 ; 协作自

Since Technology 圣驰科技

president since 自总统 ; 总统以来

Sculpture Since 西方当代雕塑

参考资料来源：百度百科-since

Answer 2

不要误导啊~~~
对于since引导的短语以及从句，另外还有for+时间段所构成的短语都应该用how long来提问。
How long have they been workers?

Answer 3

since的三种不同用法

Answer 4

Since when they have been worker?

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