1.It's very cold there in winter
句意：冬天那里很冷。
根据所给词it's可知，it指代天气，位于句首作主语，首字母需大写。
表语：very cold，是第二个和第三个词
地点状语：there，是第四个词
时间状语in winter，是第五个和第六个词
故答案为It's very cold there in winter
2.It's said that the lowest temperature can be -40 ℃
句意：据说最低气温可达零下40度。
根据所给词it's said that 可知此句是it作形式主语，that后面是宾语从句。宾语从句的主语是the lowest temperature，谓语是can be，宾语是-40 ℃ 。故答案为It's said that the lowest temperature can be -40 ℃。
3.It's comfortable to stay inside
句意：呆在里面很舒服。
根据所给词it's和to stay inside可知，it应该在句中作形式主语，to stay inside是真正的主语。所以it's位于句首，首字母需大写，comfortable作表语，跟在it's后面，不定式是真正的主语位于句末。故答案为It's comfortable to stay inside。
4.It was fun to see so many beautiful things made of ice
句意：看到这么多由冰制成的美丽的东西真有趣。
根据所给词可知it was和to see可知，it应该在句中作形式主语，to see...是真正的主语。所以it's位于句首，首字母需大写，fun作表语，跟在it's后面，不定式to see...是真正的主语位于句末，so many“如此多的”后面需要接名词复数，所以是so many beautiful things made of ice，跟在to see后面，故答案为It was fun to see so many beautiful things made of ice。
5.How long does it take to fly from Beijjing to Harbin
句意：从北京飞哈尔滨需要多长时间？
根据所给词how long可知，此句是由疑问词how long引导的特殊疑问问句，位于句首首字母需大写。特殊疑问句的结构是：疑问句+一般疑问句+其他。
所以does it take跟在疑问句后面，这里it作形式主语，真正的主语应该是to fly from Beijing to Harbin，故答案为How long does it take to fly from Beijjing to Harbin。
6.My parents and I all think it comfortable to travel by plane
句意：我和我父母都认为乘飞机旅行很舒服。
根据所给词it和to可知，此句需要用it作形式主语或形式宾语。结合所给词my parents and I和all think可知，主语应该是my parents and I，位于句首，谓语是all think，所以it应该是形式宾语，comfortable跟在it后面作宾补，不定式to后面接动词原形即to travel by plane作真正的宾语。故答案为My parents and I all think it comfortable to travel by plane。
7.It's much faster to go by plane
句意：乘飞机去要快得多。
根据所给词it's和to go可知，it应该在句中作形式主语，to go是真正的主语。所以it's位于句首，首字母需大写，much faster作表语，跟在it's后面，不定式to go...是真正的主语位于句末，by plane表示去的交通方式，跟在to go后面。故答案为It's much faster to go by plane。
