Unit4 weather and our lives语法精讲精练【含答案解析】 - 2024-2025学年沪教版五四制(2024）六年级下册英语

Unit4 Weather and Our Lives语法精讲精练（含解析） Preparatory it作形式主语 1. We use it for time, day & date, season, weather, temperature or distance. it用于指代时间、星期、日期、季节、天气、温度或距离。 Time（时间） —What time is it —It's half past ten. It's late. It's time to listen to the weather forecast. Day & Date（星期和日期） —What day is it (today) —It's Thursday. It's 16 September. It was my birthday yesterday. Season（季节） —What season is it now —It's spring now. Weather（天气） It's raining./It isn't raining./Is it snowing It rains a lot here./It didn't rain here. Does it snow very often here It's warm/hot/cold/fine/cloudy/windy/sunny/foggy/... It's a nice day today. Temperature（温度） It is 28 degrees Celsius today. It reached 42 degrees Celsius in this area. Distance（距离） It's three kilometres from our home to the city centre. How far is it from the weather satellite to the Earth It's a long walk from here to the bus stop. We can go home. It's not far. 2. We use it in the sentence pattern “ It's (It is) + adj. + to-infinitive “ to show our feelings about something or doing something. it还用于“It's (It is) +形容词+含有to的动词不定式”的结构中，表示对某物、某事的感受。 It's/It is +easy/difficult/impossible/dangerous/... + to do ... In this pattern, the to-infinitive part is the real subject of the sentence. Since the part is a bit too long, we usually use preparatory it instead and put the to-infinitive part at the end of the sentence. 在这个句型中，带to的动词不定式是句子真正的主语。由于这个部分比较长，通常被置于句末，而使用it充当形式主语。 e.g. It's nice to do the weather experiment. It's impossible to travel in the weather balloon. It wasn't easy to predict weather in the past. 沪教版五四制六年级下册英语Unit4语法专项练习 一、用it作形式主语完成句子（每题2分，共30分） 1. _____ (is / was) important _____ ( learn ) about different weather phenomena. 2. _____ (It's / Its) difficult _____ ( predict) extreme weather accurately. 3. _____ (is / are) interesting _____ (watch ) how clouds form. 4. _____ (It was / There was) necessary _____ (take) an umbrella when it's rainy. 5. _____ (is / was) wonderful _____ (play ) in the snow on a snowy day. 6. _____ (It's / It) impossible _____ ( fly) a kite without wind. 7. _____ (is / are) dangerous _____ (stay) outside during a storm. 8. _____ (It was / There was) great _____ (enjoy) the sunshine on a sunny day. 9. _____ (is / was) convenient _____ (check ) the weather report on your phone. 10. _____ (It's / Its) useful _____ ( know) some basic weather signs. 11. _____ (is / are) nice _____ ( go) for a walk on a cool autumn day. 12. _____ (It was / There was) hard _____ (see ) clearly in the fog. 13. _____ (is / was) exciting _____ ( experience) a typhoon from a safe place. 14. _____ (It's / It) important _____ (wear) warm clothes in winter. 15. _____ (is / are) pleasant _____ (listen ) to the sound of rain at night. 二、单项选择（每题2分，共30分） 1. —What's the weather like today —_ ... ...