Grammar and usage牛津模块一第二单元语法.ppt

e.g. The?news?that?his?health?is?failing? made?us?sad.??他健康状况不佳的消 息使我们很难过。?? ? I?have?no?idea?where?they?are? spending?their?holidays.?? 我不知道他们在哪里度假。? There?is?no?doubt?that?he?will?come? here?again. 他会再来这里，?这是毫无疑问的。? When we can set off depends on the weather. = (preferable) It depends on weather when we can set off. 1. It + be + adj. ( true, certain, possible, obvious, likely…) that… 2. It + be +noun phrase (no wonder, an honour, a pity,…) that… 3. It+ be + past participle (said, reported, expected, announced…) that… 4. It + seems/appears that…. 5. It doesn’t matter that… it 作形式主语的句型: e.g. To learn a foreign language is a challenging task. = (preferable) It is a challenging task to master a foreign language. To gain access to the Internet is important for us. = (preferable) It is important for us to gain access to the Internet. B. when the subject is a to-infinitive. C. when the subject is a v-ing form. e.g. It is fun wandering in the countryside. = (preferable) Wandering in the countryside is fun. It takes up a lot of my time travelling to Beijing. = (preferable) Travelling to Beijing takes up a lot of my time. 2. It can also be used before seem, appear, happen, chance, turn out and prove as the empty subject of a sentence. e.g. It seems that he is enthusiastic about drawing. = He seems to be enthusiastic about drawing. It happens that my new neighbour comes from my home town. = My new neighbour happens to come from my home town. 3. We usually use the preparatory subject it with a clause or to infinitive (preferable), but with the verb-ing form we prefer the real subject at the beginning. * That the earth is round is a fact. Mrs. Black won’t believe that her son has become a thief. My idea is that we should do it right now. I had no idea that you were her