Unit5_What_are_the_shirts_made_of_Section_B_2b-3b预览.ppt

turn on 打开 turn off 关闭 turn up 调大(音量) turn down调小(音量) turn against 背叛 turn in 上交 turn over 翻转 5. He sent them out to ask for help when in trouble. 当遇到麻烦的时候，他就放孔明灯以 寻求帮助。 (l) send out意为“发出；放出；发送”，是 “动词+副词”短语，代词作宾语时，要放在 两者之间。但如果名词作宾语，可以放在 短语后 面，也可放在短语中间。 ? The sun sends out light and heat. 太阳发出光和热。 (2) when in trouble是状语从句的省略句，当主句主语和从句主语相同且从句中有be动词时,可以把从句中的主语以及be动词省略。 ? I saw him while (I was) waiting for the bus. 等公共汽车的时候我看见他了。 ? He fell asleep when (he was) on duty. 他值班的时候睡着了。 6. They are made of bamboo and covered with paper. 它们由竹子制成，外面被糊上纸。 be covered with 意为“被......覆盖”。 ?The whole land is covered with white snow now. 现在整个大地都被白雪盖住了。 be covered by 也表示“被……覆盖”是被动语态结构，而be covered with是系表结构，侧重于事物的状态，可译为“到处都是”。 ?The field is covered by water.地被水 淹了。 ?The field is covered with water. 地里到处都是水。 7. When the lanterns are lit, they slowly rise into the air like small hot-air balloons for all to see. 孔明灯被点燃后会慢慢上升到空中,像小型的 热气球,能被所有人看见。 (1)时间状语从句中，谓语are lit是被动语态结 构，意为“被点燃”。light作及物动词时，意 为“点燃”，过去式和过去分词都是lit。 ? He lit a cigarette and began to smoke. 他点着了 一支烟开始抽起来。 (2) rise into意为“上升到；升人”。 ? Chang’e-3 rose into space within seconds. 短短几秒钟之内，“嫦娥三号”升入 太空。 8. They are seen as bright symbols of happiness and good wishes. 它们被看作是幸福和美好祝福的光明的象征。 as介词，意为“作为;当作”。 ? He works in the school as a teacher of math. 他在学校里担任数学教师。 (1) as 意为“因为；由于”引导原因状语从句。 ? You must hurry up as there is little time left. 你必须快点，因为剩下的时间不多了。 (2) as 意为“像；按照”引导方式状语从句。 ? You must do everything as I asked you to. 你必须按我要求的那样做每件事。 (3) as 意为“当……的时候；一边…一边…”引导时间状语从句。 ? She sings as she walks. 她边走边唱歌。 9. The paper, usually red, is folded before it is cut with scissors. 通常是红色的纸,在用剪刀裁剪之前要先折叠。 scissors意为“剪刀”，是名词复数形式，常用表达： a pair of scissors 一把剪刀。“a pair of + 复数名词 ” 做主语时，谓语动词与pair形式一致。 ? A pair of scissors costs a little, in fact. 一把剪刀实际上花不了几个钱。 10. The pieces are usually cute children or