for加段时间,那so far加什么?

问题描述:

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 ...