to decide whether to learn or not.
学不学由你自己决定.. 98⑴.
（1）He is wondering whether to go
to the party.
他在纠结是否参加这场聚会。 99⑵.
（1）Could you still remember how
to use this machine?
100⑶.
（1. Don't forget what to do and
where to go. 别忘了要做
的事情，别忘了要去的地方
101⑷.
(1)She didn't even take the trouble
(不怕麻烦) to find out how to
spell my name.
她嫌麻烦，甚至连我的姓名如何拼写
不想搞清楚。 102⑸.
(1) Please show me where to find love
