for加段时间，那so far加什么？

for加段时间，那so far加什么？

so far:迄今为止

Examples:
1. The scientist is doing experiments no one has so far attempted.
科学家们正在作一项迄今为止没人做过的实验。
2. We've only raised 2000 so far; we're still 500 short (of the amount we need).
我们到目前为止才筹集到2000英镑, （离所需数目）还差500英镑.
3. I am resolved to try story-writing but so far have not made a start.
我下决心试试小说写作，不过迄今为止还没开始。
4. So far I haven't heard of anybody who wants stop living on account of the cost.
迄今为止，我从未听说过有人因生活费过昂而不要生存下去的。
5. So far as English is concerned, it is not so difficult as you might think.
就英文而言，它并不像你所认为的那样难。
6. Even on the most charitable analysis, it has not been a great success so far.
即使根据最宽的标准来说，到目前为止还算不上成功。
7. The bus route goes so far as that, so you'll need to take a taxi.
汽车路线到此为止了, 你得叫辆的士。
8. I have had no reply from her so far.
我至今没有得到她的答复。

So far，So good．
目前还不错。
OK so far?
到现在为止都懂吗？
So far forth as...
到。。。的程度
No, not so far.
不，还没有。
Ok (Okay), so far.
目前还好。
Not too bad so far.
不太坏。
He doesn't go so far.
他没去那样远。
Are you with me so far?
到现在为止你了解我所说吗？
So far as one is concerned.
就某人而言
So far it's all empty statement.
你说了半天都是些空话。

so far是“到目前为止”的意思，现在完成时态的最明显的标志