精选优质文档-倾情为你奉上谓语动词、非谓语动词小题夯基练I 单句语法填空1He _ (learn) more than 6,000 English words when he entered the university at the age of 17.解析：had learned由when引导的状语从句可知，他在17岁以前就学会了6 000多个英语单词。强调过去的过去，用过去完成时。2Have you seen my email about our TESL project?Yes. Luckily I checked my emails yesterday. Normally I _ (not open) my email box.解析：dont open open这一动作表示经常性、习惯性的动作，故用一般现在时。3Professor Williams keeps telling his students that the future _ (belong) t
