2019-牛津实用英语语法-242 动词+ how／what／when／-实用word文档 (2页)

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A 这类动词中最常用的有 ask ， decide ， discover ， find out ，for - get ， know ， learn ， remember ， see (= understand / perceive )， show +宾语， think ， understand ， want to know ，wonder ：

He discovered how to open the safe .

他发现了打开保险柜的方法。

I found out where to buy fruit cheaply .

我找到了买便宜水果的地方。

I didnt know when to switch the machine off .

我不知道什么时候关掉机器。

I showed her which button to press .

我告诉她应该按哪一个按钮。

She couldnt think what to asy .

她想不出说什么。

(注意：这种结构不常用于动词 think 的现在式和过去式之后，但可以用于 think 的其他形式之后，或者如上面最后一个例句那样，用于前面还有一个助动词的 think 之后。)

B whether +不定式同样可以用于 want to know ， wonder 之后：

I wonder / wondered whether to write or phone .

我不知道应该写信还是应该打电话。

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?一般情况下，直接加s 如：read-reads，swim-swims ?以s，x，sh，ch，o结尾，加es 如：wash-washes，watch-watches，do-does ?以辅音字母＋y结尾，变y为i，再加es 如：study-studies，fly-flies ?不规则变化如：have-has 4、一般现在时的句型转换：肯定句否定句一般疑问句及回答 They watch TV every day.They don’t watch TV every day. —Do they watch TV every day? —Yes, they do. / No, they don’t. She watches TV She doesn’t watch— Does she watch TV every day?

every https://www.360docs.net/doc/7c90277.html, every day.—Yes, she does. / No, she doesn’t. 现在进行时 1、定义：表示现在或现阶段正在进行或发生的动作。句中常有now，look，listen等词。如：I am washing clothes now. Look! Liu Tao is climbing the tree. Listen! Jane is singing in the music room. 2、构成：be动词（am/is/are）+ 动词现在分词（V-ing） 3、动词现在分词构成： ?一般是在动词原形后加ing 如：read-reading，drink-drinking，eat-eating，look-looking ?以不发音的e结尾的动词，去掉e，再加ing 如：write-writing，make-making，ride-riding，take-taking ?以重读闭音节结尾，如末尾只有一个辅音字母，要双写这个字母，再加ing 如：sit-sitting，swim-swimming，put-putting，run-running，stop-stopping，get- getting，begin-beginning，jog-jogging，forget-forgetting 4、动名词其实就是动词的现在分词，它既有名词性质（可作主语），又有动词性质（可带宾语）。如：Asking the way My hobby is collecting stamps. He is good at skating. 5、现在进行时的句型转换：肯定句否定句一般疑问句及回答 —Is he running now? He is running now.He isn’t running now. —Yes, he is. / No, he isn’t.

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