大学英语专业写作基础PPT演示课件.ppt

Most sentences with subordinating conjunctions can be turned around. Dont forget to put a comma when a two-part sentence starts with a subordinating conjunction. A comma usually separates the two sections of the sentence: No Comma: Im a happy man now that Ive solved my problems. Comma: Now that Ive solved my problems, Im a happy man. No Comma: You can use these tools till the fanners come back. Comma: Till the fanners come back, you can use these tools. 。 Sentences grow as ideas grow. Language is related to thought. The quality of language is related to the quality of thought. Children start to write simple sentences. But as they grow up, their thoughts become more complicated, their sentences more complex. They learn to communicate dozens of bits of related information in the same sentence. Now look at the following two ways of combining sentences: TWO SENTENCES: Tom heard a knock at the door. Tom went to open it. ONE SENTENCE: Hearing a knock at the door, Tom went to open it. TWO SENTENCES: Bert is a certified accountant. Even Bert was stumped by the fourth math problem. ONE SENTENCE: Even Bert, a certified accountant, was stumped by the fourth math problem. 。 2. Using Long Sentences In contrast to short sentences, long sentences are particularly useful for presenting a set of complex, interlocking ideas. The following paragraph shows how a series of long sentences can be used effectively in this way. It is particularly difficult to find good, cheap accommodation In big cities. What is more, public transport is sometimes crowded and dirty, particularly in the rush hour, and even the parks can become very crowded, especially on Sundays when it seems that every city-dweller is looking for some open space and green grass. Last of all, despite all the crowds, it is still possible to feel very lonely in a city. In conclusion, I think that city life can be particularly appealing to, young people, who like the excite