Unit 10 Ive had this bike for three years.Period 3 Section A(Grammar Focus-4c)一一、用、用for 或或since 填空填空1.I have been here _ five months ago.2.He has been an engineer _ two months.3.Great changes have taken place(发生)_ you left.sinceforsince4.I have studied English _ I was 12 years old.5.Its been two years _ I became a high school student.sincesince二、对比练习二、对比练习:根据汉语意思完成句子根据汉语意思完成句子6.我已经借到那本书了。I _ the book.我已经借那本书两天了。I _ the book for two days.have borrowedhave kept7.吉姆已经加入那个乐队了。Jim _ the band.吉姆已经加入那个乐队一个月了。Jim _ a member of the band for a month.has joinedhas been8.他的祖父已经去世了。His grandfather _.他祖父已经去世两年了。His grandfather _ for 2 years.has diedhas been dead9.我父亲已经到达中国了。My father _ China.我父亲已经在中国一个星期了。My father _ for a week.has arrived inhas been in China 三、语法短文填空三、语法短文填空Dear Lucy,How is everything in London?I 10._(not see)you for so long.【点拨】根据时间状语“for so long”可知,句子时态应为现在完成时,主语I 为第一人称,因此助动词是have,与not 连用缩写为havent,故填havent seen。havent seenI miss you very much.Since last summer I 11._(stay)in Beijing,China.【点拨】根据“Since last summer”可知,句子时态应为现在完成时,主语I 为第一人称,因此助动词是have,故填have stayed。have stayedLast month I 12._(start)to learn Chinese.【点拨】根据时间状语“Last month”可知,句子时态应为一般过去时,动词用过去式,故填started。startedSo far I 13._(learn)fifty Chinese words but I keep 14._(forget)them.【点拨】13.根据“So far”可知,句子时态应为现在完成时,主语I 为第一人称,助动词是have,故填have learned。【点拨】14.keep doing sth.“一直做某事”,forget“忘 记”,-ing 形 式 为 forgetting,故 填forgetting。have learnedforgettingI think its hard to learn Chinese but my sister Linda doesnt think so.She 15._(begin)to learn Chinese already.【点拨】根据“already”可知,句子时态应为现在完成时,主语She 为第三人称单数,助动词是has,故填has begun。has begunShe started it last Tuesday.So far,she 16._(remember)forty Chinese words.【点拨】根据“So far”可知,句子时态应为现在完成时,主语she 为第三人称单数,助动词是has,故填has remembered。has rememberedLinda only 17._(practice)Chinese for an hour a day.【点拨】此处描述事实,句子时态应为一般现在时,主语Linda 为第三人称单数,谓语动词应用单三形式,故填practices。practicesHowever,I spend five hours 18._(practice)Chinese.Her Chinese is better than mine.【点拨】sb.spend(s)some time doing sth.“某人花费一些时间做某事”,故填practicing。practicingI feel very sad.Since last night I 19._(spend)all my time practicing Chinese.If I do that every night,Im sure I will be able to use Chinese freely.Yours,Joe【点拨】根据“Since last night”可知,句子时态应为现在完成时,主语I 为第一人称,助动词是have,故填have spent。have spent