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随堂训练 Ⅰ. 单句改错 1. Through our research, we come to know that everybody must pay attention to our environment and some measures should be taken to protect. 【解析】在protect后面加it。protect是及物动词, 后面需接宾语, 此处用it代替前文提到的environment。 2. Soon they came up with a good idea, and then we decided to go cycling in the countryside. 【解析】we→they。上文提到他们想到了一个好主意, 所以下句应该是他们决定去农村骑行。 3. As students, we have classes from early morning till late afternoon, so taking a ten-minute break between class is definitely important, even necessary. 【解析】class→classes。由between可知, 是在两节课之间, 故用复数。 4. When it comes to relaxation, I’d like to go skating, climb mountains and see several movie. 【解析】movie→movies。由前面several可知, 此处用复数。 5. Both upset and annoyed, I decided to go on feet. 【解析】feet→foot。on foot意为“步行”, 是固定短语, 不用复数。 6. As I was waiting for my order to come, I noticed the old man in a wheel chair rolling himself over to a table. 【解析】the→an。old man第一次出现, 无需特指, 故用不定冠词。 | 
