精选优质文档-倾情为你奉上 非谓语动词作状语练习 Exercise 1 填空1._ in 1636, Harvard is one of the most famous universities in the United States. (found)2._ by the advances in technology, many farmers have set up wind farms on their land. (encourage)3. _ the city center, we saw a stone statue of about 10 meters in height. (Approach)4._ by the loud noise,I went to see what was happening.( frighten)5._ un