学英语必备的语法知识(4)

 　　英语是一名语言学科，它的学习在于平时的积累，如何能学好英语，提高我们的英语口语以及英语写作能力，小编为大家总结了一些高频的英语句型，赶紧记起来吧。1.何时运用被动语态：

　　(1)强调动作的接受者：America was discovered by Columbus.

　　(2)不知谁是动作的执行者：You are wanted on the phone.

　　(3)作客观说明：It is said that the meeting has been put off.(经典句型)

　　2.主动变被动的基本方法：(说起来容易，掌握起来需要用心!)

　　(1)主动语态中的宾语变为被动语态的主语。

　　(2)谓语动词变为由“be + 过去分词”的形式，配合时态作相应变化。

　　(3)主动语态主语置于介词 by之后，如无必需，则省略。

　　(4)不及物动词没有被动语态。

　　现 在 do (does) →am / is / are + done

　　We keep the piano in the living-room.

　　→The piano is kept in the living-room.

　　过 去 did→was / were + done

　　They built the bridge in 1980.

　　→The bridge was built in 1980.

　　将 来 shall shall

　　will do → will + be + done

　　He will read the book tomorrow.

　　→The book will be read tomorrow.

　　现在完成 have have

　　has done → has + been + done

　　We have delivered the newspaper.

　　→The newspapers have been delivered (by us).

　　过去完成 had done → had been done

　　She had seen the film before she came here.

　　→The film had been seen before she came here.

　　将来完成 shall shall

　　will have done → will have + been + done

　　By the end of this term we shall have finished 80 texts.

　　→By the end of this term 80 texts will have been finished.

　　现在进行 am am

　　is doing → is + being + done

　　are are

　　They are drawing the picture.

　　→The picture is being drawn by them.

　　过去进行 was doing → was + being + done

　　were were

　　He was reviewing their lessons at this moment yesterday.

　　→Their lessons were being reviewed at this moment yesterday.

　　情态动词 may may

　　can can

　　must must

　　should do → should + be + done

　　ought to ought to

　　used to used to

　　You must write an article on the subject.

　　→An article must be written on the subject.

　　以上就是高频句子的总结，当然，学习英语不能仅仅靠句子的学习，hellokid少儿英语课堂为大家总结更多的英语学习方法以及更多的英语学习资料，了解看看吧。