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t work 5. have a break 6. have lunch 7. do homework Step 5 Complete the sentences with at, in or on. 1. Review the using of at, in and on. 2. Ask the students to fill in the blank individually , then check with a partner . 3. Call back the answers from the whole class , check the answers . Keys : 1. in 2. on 3. at 4. on 5. in 6. at Step 6 Complete the sentences with the words from the box. 1. Read through the phrases with the whole class. 2. Ask the students to plete the sentences with the words from the box with a partner. 3. Call back the answers from the whole class, check the answers. Keys : 1. break 2. subject 3. because 4. interesting 5. homework Step 7 Important and difficult points. 1.時間的表達方式。 1) 直接表示時間法:就是按照幾點幾分的順序來表示時間。(這個最簡單)例如: 8: 00—— eight o’clock 5:20—— five twenty 2) 添加介詞表示法:如果分數小于或等 于 30,就用 past來表示,結構是 “ 分鐘 +past+該點鐘 “ ;如果分鐘大于 30,就用 to來表示,結構是 “ 分鐘 +to+下一點鐘 例如: 12: 05—— five past twelve 9:50—— ten to ten 8:40—— twenty to nine 如果分鐘是 15,一般用 a quarter 來代替 fifteen。 如果分鐘是 30, 一般用 half來代替 thirty。例如: 9: 15—— a quarter past nine 11: 30—— half past eleven 2: 45—— a quarter to three 2.用在時間前的介詞 (at , in , on)的用法。 at常用來表示在某點時間,即 “ 在幾點幾分; 在某一時刻 ” 。 如: She usually gets up at 6:00 in the morning. 她通常早上6點起床。 The man often gets to his office at 8:30. 這個男人經常 8: 3