预习导航 一、学习下面的生词，并选择合适的词完成句子 significance n. 意义；
意思；
重要性；
重要意义 anyhow adv. 以……方式；
不知怎么地 systematic adj. 有系统的；
有计划的；
有条理的 delete vt. 删；
删除 album n. 相册；
集邮册；
唱片 spit vt. 吐出(唾液、食物等) vi.吐痰 1.They discussed the statistical ______ of the results. 2．We must stop him from seeing her ______. 3．We must adopt a ______ approach to solving the problem. 4．It＇s very rude to______ at someone. 5．The author ______ many unnecessary words in the first draft. 6．The song was originally a filler on their first______. 答案：1.significance 2.anyhow 3.systematic 4.spit 5.deleted 6.album 二、用所给动词的适当形式填空 1．—How long has it been raining? —It ______(rain) for two hours. 2．Hello，Tom.I ______(look) for you all the morning.Where have you been? 3．For the last three months，Matthew ______(study) Chinese. 4．He ______(wait) over there since 2：00. 5．She ______(play) tennis since she was seven. 6．The war ______(go) on for nearly a decade. 7．Without doubt you ______(work) very hard. 8．I ______(look) forward to meeting you. 9．The pagoda ______(stand) there since the Tang Dynasty. 10．Biological system ______(do) this for billions of years. 答案：1.has been raining 2.have been looking 3.has been studying 4.has been waiting 5.has been playing 6.has been going 7.have been working 8.have been looking 9.has been standing 10.has been doing 三、句型转换 1．He has been watching the interesting play for two hours.(改为否定句) He ______ ______ watching the interesting play for two hours. 答案：hasn＇t been 2．I have been learning English for two years.(改为一般疑问句并作否定回答) — ______you______learning English for two years? — No，I______. 答案：Have；
been；
haven＇t 3．My brother has been collecting stamps for five years.(对画线部分提问) ______has your brother been______for five years? 答案：What；
collecting 4．She has been working in_the_hospital for six years.(对画线部分提问) ______ has she been working for six years? 答案：Where 四、用正确的时态完成句子 1．自从上周以来一直下雨。
It ____________ since last week. 答案：has been raining 2．我累坏了。我一直工作一整个下午。
I am tired out.I ____________ the whole afternoon. 答案：have been working 3．今天真是个多事的日子。
Too much ____________ today. 答案：has been happening 4．我想要见你已好久了。
I ____________ to see you for a long time. 答案：have been wanting
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