經典句型一 it 強調句型
　　強調句型的基本構成：
　　It is /was 被強調部分 who/that 剩余部分(不論強調的是哪一部分，后面只能用who或that)
　　原句的謂語動詞如果是現(xiàn)在或將來時態(tài)用It is....that /who 。
　　如果原句的謂語動詞是過去時態(tài)，則用It was .....that /who 。
　　強調時間，地點，原因或方式時不能用when ， where ， why ， 或how ，必須用that .
　　經典句型二 There be 句型 表示“什么地方有.....”
　　There be 之后如有幾個并列主語時，用單數(shù)謂語動詞或用復數(shù)謂語動詞要取決于第一個主語是單數(shù)還是復數(shù)。
　　There is a pen ， a pencil and two books on the desk .(就近原則)
　　There will be an important conference named The Earth Summit to be held here .
　　There have been great changes in my hometown ever since 1980s .
　　There must be something wrong with the cellphone.
　　There be 句型的其他用法。
　　There be 句型也可以有其他形式變化，常見的有seem to be ， happen to be ， appear to be ， used to be ， is likely to be 等。
　　There seems / appears to be much hope of our team winning the match .我們隊似乎很有希望贏得比賽。
　　There are likely to be more difficulties than expected while carrying out the experiment .
　　在實驗過程中，可能會有比預計的要多得多的困難。
　　The thief broke in ， to his delight ， there happened to be nobody in the room .
　　小偷破門而入，令他驚喜的是，恰巧房間里面沒有人。
　　There be 句型中的be 動詞，也可以替換成其他動詞，常見的有l(wèi)ive ， remain ， come ， stand ， lie ， occur ， exist ， follow 等。
　　Once there lived many dinosaurs here millions and millions of years ago .
　　There stand many skyscrapers (摩天大樓)in the modern city .
　　There lies a railway in our city .
　　There came a time when ，ost of people demanded for freedom and equality .
　　There exist serious issues in the world and we should take action to solve them before it is too late .
　　There be 句型的獨立主格形式作狀語
 

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