引導狀語從句，例如：
1、We now have a small window of opportunity in which to make our views known.我們現在有一線機會使人瞭解我們的觀點。
2、This delay gives the party a breathing space in which to sort out its policies.這一延誤使該黨有了喘息之機來釐定其政策。
3、He has four weeks in which to lodge an appeal.他有4個星期的時間提出上訴。
There the children had a garden in which to play.
在那孩子們有個玩耍的花園
