Before he went abroad,he spend as much time as he could______English.用 learning 还是用 to learn

问题描述:

Before he went abroad,he spend as much time as he could______English.用 learning 还是用 to learn

learning spend money/time on sth
spend ....(in) doing sth

to learn,句型是spend sth to do sth

as much …as I can尽可能多的,固定结构,做插入语
I 做主语 , spend 为谓语, time为 宾语, to learn English 宾语补足语.

learning
你可以理解为
he spend much time learning English

用learning
spend time doing sth固定搭配

用learning
spend time doing sth固定搭配
as much time as he could是插入语

应该选learning。
spend.....on doing sth应该是固定搭配,其中的介词on可以省略。
我印象中没有spend ...TO DO sth这种形式