“教课”用英语怎么说

他以前从未教过课，甚至不确定自己该不该教课。He'd never been in a class before and he was not even sure that he should have been teaching.这次教课选择题还是填充题?Was the test multiple choice or fill in the blank?明天外教课去广州越秀公园边走边介绍啊!Teacher lesson tom...