SEO操作指南-入门篇.ppt

Unit 3 A taste of travel
语法目标扫描
被动语态(详见“语言点详解”第一条)
Grammar

被动语态表示主语是动作的承受者。
(1)动词的被动语态在各种时态中的表示:
一般式
进行式
完成式
现在
are done
are being done
have been done
过去
were done
were being done
had been done
将来
will be done
will have been done
过去将来
would be done
would have been done
(2)一些特殊结构的被动语态的表示:
①带复合宾语的句子
将带复合宾语的句子转换成被动语态时,一般把主动结构中的宾语转换成主语,保
留宾语补足语。如:
◆We always keep the classroom 。
→The classroom is always kept clean.
②带双宾语的句子
将带双宾语的句子转换成被动语态时,通常有两种转换方式。一种是将间接宾语转
换成主语,保留直接宾语。第二种是把直接宾语转换成主语,保留间接宾语。此时,
常需要在间接宾语前面加适当的介词。如:
◆We gave him a warm 。
→He was given a warm e.
◆Thev bought her a silk handkerchief as a birthday present.
他们给她买了一条真丝手帕作为生日礼物。
→A silk handkerchief was bought for her as a birthday present.
【注意】
如果直接宾语是宾语从句或动词不定式,则必须把间接宾语转换成主语。如:
◆Thev told him that he had won the first prize in the petition.
他们告诉他,他在歌咏比赛中得了一等奖。
→He was told that he had won the first prize in the petition.
◆He taught her how to ride a horse。他教她如何骑马。
→She was taught how to ride a horse.
(3)动词的主动语态表示被动的意义:
①wash、write、sell、cut、clean、read、look、iron、wear、feel、draw、drive等词
的主动形式表示被动意义。
·This book sells very 。
·The shirt washes 。
·The meat cuts easily. 这块肉很容易切。
②need、want、require、deserve等词后面用动名词的主动形式表示被动意义。
·The children need looking 。
·The window requires 。
【拓展】某些动词不能用于被动语态。
(1)某些不及物动词,如:happen(发生)、appear(出现)、disappear(消失)、belong(to)
(属于)、rise(上升)等。.
(2)表示状态的及物动词,如:cost(值)、fit(合适)、lack(缺少)、hold(容纳)等。
(3)连系动词,如:taste(尝起来)、smell(闻起来)、turn(变得)等。
(4)表示度量的动词,如:measure(有……长/宽)、weigh(重)等。
Reading
;蜿蜒;曲折
·From here, a narrow road twists up to the top of the
里盘旋至山顶。
【拓展】;扭;拧
3. construction
【常用搭配】under construction在建造中
·Many underground lines are under construction in Shanghai.
在上海,很多条地铁线路正在建设中。
【拓展】
①construct
●It took four years to construct this suspension bridge