为什么,What can I do (to make)you happy?,

问题描述:

为什么,What can I do (to make)you happy?,

两个动词之间加TO

to do在句子中表目的
这句话的意思为 我能够做些什么去让你更开心.
相同问题的例句有:
1.Students study hard to improve their study.
2.How can I improve myself to be a better man?