1.Shortly after he finished his homework,he went on ___(revise)for the test.2.Mr li was acting in a documentary last month.But I don't know if he ___(finish)it.请说明理由
问题描述：
1.Shortly after he finished his homework,he went on ___(revise)for the test.
2.Mr li was acting in a documentary last month.But I don't know if he ___(finish)it.
请说明理由
答
1.Shortly after he finished his homework,he went on to revise___(revise)for the test.
go on doing sth.继续去同一件事
go on to do sth. 继续，做另外一件事
这里开始是在做作业，后来是去复习，应该可以算是两件不同的事情了，用go on to do
2.Mr li was acting in a documentary last month.But I don't know if he _has finished__(finish)it.
李先生上个月在纪录片里出演，但是我不知道他现在是否已经结束了那片子
if在这里是是否的意思，has finished现在完成时
答
1revising,介词后跟动名词2finishes,if 引导的条件状语从句一般用现在时代替过去时等