Кредит Онлайн 21
from when or since when - WordReference Forums
Since when have you been a boss? is a special way of saying that you are questioning whether the person is or has the right to be a boss. It is an example of sarcasm. If you start with I wonder, you are simply asking how long someone has been a boss, which you can do by saying How long have you been a boss? or When did you become a boss?
英语语法专题系列 第07讲：常用的时间介词：for, since, from和ago用法及区别
常用的时间介词：for, since, from和ago用法及区别 1、for for用来表示某动作或情况持续了多长时间，既可以指过去，也可以指现在和将来。 I once studied the guitar for three years．我曾经学过3年吉他。 That house has been empty for six weeks．那所房子空着已经有6个星期了。 We go to the seaside for a week every August．我们 ...
it is/it has been...+since - WordReference Forums
1a. It is three years since I came to China. 1b. It has been three years since I came to China. We all know that 1a=1b. Recently, I came across a sentence. 2a. It was long since I had last seen her and if someone had not mentioned her name I hardly think I would have recognized her. Can we...
for 和since前面一定要用完成时吗？ - 知乎
Since在绝大多数情况下都跟完成时，不过在在这个句型中除外 it is (has been ) + 段时间 + 动作，比如： It has been five years since I got married. It is five years since I got married. 均可。 在中考中，常考since与完成时态一起连用，比如 I ______ many new friends since I came here.
在表示时间时，since和from有什么区别？ - 知乎
Since 2010，这种情况指的是，2010年是一个过去的时间，现在可能是2016或2020年，我们之前就开始了，并且现在持续在做，举例： Since 2015, we have been making all students study English。 希望我的回答能帮助到题主。
since when; since which - WordReference Forums
Since then, the cultural management system has witnessed great changes.' 'When' is the relative form of the demonstrative 'then', as well as being a question word.
but since he was [but + since?] | WordReference Forums
Yes, hectacon, "but since/because" is possible. You should have a good reason for doing this. Here's an example where I think "but since" is justified: He really didn't like sports, but since he was tall, he chose to play basketball.
I have been retired since / I am retired since...
I'd say " I have retired since last summer " because the word "retire" is an intrasitive verb. However "retire" is also used in passive as a transitive verb. such as "He became ill and was retired early". I know "retired" works as an adjetive in the example sentence "I've been retired since last summer"..
since + up till now - WordReference Forums
The word "since" already incorporates the notion of "up till now". Context will determine whether that implied "now" means the time of writing or the time being written about.
today, 15000 years <since><after>it was first invented
After is a better choice in that sentence. You could reasonably use since in a different sentence. Here is one possibility: It has been 15,000 years since the bow was first invented.