2014年成都初三英语第三单元重点语法
2013-10-30 09:56:45佚名
成都中考网2013年10月30日 2014年成都初三英语第三单元重点语法
1.被动语态
①英语有两种语态:主动语态和被动语态 主动语态表示是动作的执行者
被动语态表示主语是动作的承受者
Cats eat fish. (主动语态)猫吃鱼。
Fish is eaten by cats. (被动语态)鱼被猫吃。
②被动语态的构成:由“助动词be +及物动词的过去分词”构成
助动词be 有人称、数和时态的变化,其变化规则与be 作为连系动词时完全一样。
时态
|
被动语态结构
|
例句
|
一般现在 时
|
am
are +过去分词
is
|
English is spoken in many countries.
|
一般过去 时
|
was +过去分词
were + 过去分词
|
This bridge was built in 1989.
|
情 态
动 词
|
can/should
may +be+过去分词
must/……
|
The work must be done right now
|
2. 倒装句
由so+助动词(be/do/will/have)/情态动词+主语 意为:…也是一样
Neither/Nor + be动词/助动词/情态动词+主语(前为否定) 表示与前面所述事实一致.
She is a student. So am I.
She went to school just now. So did I.
She has finished the work. So have I.
She will go to school. So will he.
Tom can’t swim. Neither can John.
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