"So far he hasn't called"
"the sun isn't up yet"
1. 到目前为止:as well 也,又 |asyet 到目前为止 |as...as... 象,如同,与...一样
2. 迄今,到目前为止:41as well 也,一样 | 42asyet 迄今,到目前为止 | 44associate ... with...由......联想到......,把......联系起来
3. 到目前为止,到那时为止:as wellas / / 既...又,除...之处(还) |asyet / / 到目前为止,到那时为止 |as...as / / 像...一样
4. 到现在为止:all manner of各种各样的 |asyet到现在为止 |as it happens恰好碰巧