第五课时Section B(2a2c,everything所有事情；一切 是不定代词，当everything作主语时，谓语动词用单三式。 【拓展】类似不定代词有： something某事；有事 anything任何事 nothing没有什么事 It was difficult to take photos.拍照片是很困难的。 该句使用句型：Its adj. to do sth.，其中it是形式主语，动词不定式作真正主语,一、根据句意用所给词的适当形式填空. Im_ (interest)in the _(interest) story It is very difficult for her_ (climb) up the mountain Sally has a_ (love) petdog I dont know how_ (make) cakes We _(not watch) TV last night,interesting,to climb,lovely,to make,di
