2.Painters discovered how to use perspective and the effects of light ...

画家们发现了如何使用透视法和光线的效果...... "疑问词＋不定式"结构在句中作宾语。 读了说明书后，我知道了如何使用手机上的应用程序。

After reading the instructions, I know how_to_use the apps in the cellphone. 3.So you can walk along a street for half an hour or so and end up five minutes from where you started.

那么你有可能沿街走了半个小时左右，结果离你出发的地点实际仅有五分钟的路程。 where引导的从句作介词from的宾语。 让我们从上次停的地方继续讲故事吧。

Let's go on with our story from_where_we_stopped_last_time. 　　

　　二、课堂重点深化

　　1．effect n．效果；作用；影响

　　　[自主体验]

　　单句语法填空

　　①These hormones also have a positive effect on the heart and the blood flow.

　　②The law of celebrating the Chinese Farmers' Harvest Festival has come into effect all over the country.

　　③Though side effects (effect) from aspirin are not common, they can occur.

　　　[系统归纳]

　　 (1)have an effect on　　　　　　 对......有影响

　　bring/put ...into effect 使......生效

　　come into effect 开始生效/实施

　　take effect 见效，生效，实施

　　in effect 实际上；事实上

　　side effect 副作用

　　(2)effective adj. 有效的

　　(3)affect v. 影响

　　　[重点强化]

　　易错对对碰(affect/effect)

　　④The teacher's encouragement has a positive effect on the students.

　　⑤Smoking too much will affect your health greatly.

佳句时时写