Unit7 Grammar 2Unit7 Grammar 2When to use the When to use the active voice?active voice? ★ It’s important to know who performs the action.The ORBIS doctor do operations on the plane.The ORBIS doctor do operations on the plane.When to use the When to use the passive voice?passive voice?★It is obvious( 显然 ) who performs the action.★We do not know or do not want to know who performs the action.★We think the action is more important than the person who performs the action.Be is, am, areis, am, arewas, werewas, were + done +by sb+by sbWhat do they do every year?What do they do every year?1. Charity activities (plan/ to help the poor).2. Leaflets (hand out/ to people in the street/ volunteers).3. Toys and CDs (sell/ to raise money).are planned to help the poorare handed out to the people in the street by volunteersare sold to raise moneyWhat did they do last week?What did they do last week?1. New books (send/ to children in poor areas/ the Class1, Grade 8 students).2. Warm clothes (collect/ for poor people).3. A charity show (hold/ the Students’ Union).are sent to children in poor areas by the Class1, Grade 8 studentsare collected for poor peopleare held by the Students’ UnionFinish Part B on page 100.1._____ a new library _____ in our school last year? A. Is; built B. Was; built C. Does; build D. Did ; build 2. Cotton （棉花） ____ in the southeast of China. A. is grown B. are grown C. grows D. grow 3.So far, the moon ____ by man already. A. is visited B. will be visited C. has been visited D. was visited 4. How many trees ____ every year? A. are planted B. will plant C. have been planted D. planted 5. The Great Wall ____ all over the world. A. knows B. knew C....
