1.句子主干是“我們走回家”，因?yàn)檐嚊]有來所以我們只好走回家丈咐，可以使用so連接兩個(gè)句子爵川，表示因果。半個(gè)小時(shí)過去了? ? 有“了”為一般過去時(shí)應(yīng)翻譯成half an hour went by
譯:Half an hour went by材部，but the last bus had not come yet so we had to walk home.
2.句子主干是“瑪麗對(duì)漢語考試很擔(dān)心”，是因果關(guān)系用because連接唯竹，時(shí)態(tài)為一般現(xiàn)在時(shí)乐导，看上去-look，背熟課文-learn the text by heart
譯:Mary looks very worried about the Chinese exam because she has not learned the text by heart.
3.句子主干是“我們?nèi)⒂^博物館”摩窃，since既然兽叮，此處為推論因果復(fù)句。主句用一般現(xiàn)在時(shí)猾愿，已被-現(xiàn)在完成時(shí)鹦聪。不妨-might as? well
譯:Since the basketball match has been postponed ，we might as well visit the museum.
4.句子主干是“他住在澳大利亞”蒂秘，all the way一直? 放在動(dòng)詞之后
將時(shí)間狀語放在句尾
譯:He lived all the way in Australia with his parents during entire world war II period .? ? ?
5.句子主干是“我與我的同學(xué)失去了聯(lián)系”泽本，since引導(dǎo)時(shí)間狀語從句，主句用現(xiàn)在完成時(shí)姻僧，從句用一般過去時(shí)规丽，失去聯(lián)系-lose touch? 可以說-kind of
譯:Since I graduated from Nanjing university in 1985，I have kind of lost touch with my classmates.
