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u must.否定回答:No, you needn’t.must、can、should都是情態(tài)動(dòng)詞,后跟動(dòng)詞原形。5. We mustn’t walk now. 我們現(xiàn)在絕不能行走。so many cars 如此多的小汽車(chē) so much water 如此多的水6. go fast 走得快(開(kāi)得快)7. a red light 一個(gè)紅燈8. Why does the bus stop here? 公交車(chē)為什么停在這兒?9. Look at the red light . 看紅燈It means we must stop. 它的意思是我們必須停下來(lái)。A: You mustn’t run fast on the road. 你禁止在路上快速地跑。You can’t go to school because you are sick. 你不能去上學(xué)因?yàn)槟闵×恕?is the bus stopping again?公交車(chē)為什么又停下來(lái)? 13. Some elephants are crossing the road. 一些大象正在穿馬路。7. There he is. 他在那兒。1. A: How can you cross the road safely? 你如何安全地過(guò)馬路?B:I must look for a zebra 。句首用to表目的,意為“為了……”keep safe = stay safe 保持安全wait on the pavement 在人行道上等待look out for cars and bikes 當(dāng)心小汽車(chē)和自行車(chē)look out for 當(dāng)心,當(dāng)心 11. You must first look left, then right and then left again.你必須先看左邊,然后看右邊,再看左邊。many busy roads 許多繁忙的馬路 in the city在城市里 3. How can you cross the road safely? 你怎