![](https://img.haomeiwen.com/i15449003/3aa31547074dcc61.png)
当不定词作为名词成分存在时,可用动名词,功能不同,不能替换
名词用法
当主词
![](https://img.haomeiwen.com/i15449003/f544e8e9c267d318.png)
1。假主词It
2。不定词前加for
![](https://img.haomeiwen.com/i15449003/089ab6a07638e234.png)
![](https://img.haomeiwen.com/i15449003/d5c345f7b37b773e.png)
02
1。不定词的否定形
2。当补语
take care of 有对象才用of
![](https://img.haomeiwen.com/i15449003/127adc5e404cb7d9.png)
当受词
1.decide后面接动词时只能是不定式
2.need后面接不定词还是动名词要看主词
3。疑问词+不定词=》名词片语
4。or作为连接词左右两边词性要一样,同为形容词或同为名词
![](https://img.haomeiwen.com/i15449003/53ae7739e61ad703.png)
形容词用法
![](https://img.haomeiwen.com/i15449003/9bd89df8cc7169c4.png)
名词或名词片语要不要介系词有时候需要倒过来看,找前面是否有受词
![](https://img.haomeiwen.com/i15449003/ac75dbbd1724cd03.png)
用关系代名词替换
![](https://img.haomeiwen.com/i15449003/36533dee9a79a116.png)
副词用法
表示目地“为了。。。。”
![](https://img.haomeiwen.com/i15449003/75902f7f95239f13.png)
1。表原因
2。表结果
![](https://img.haomeiwen.com/i15449003/08d4b070b3652ead.png)
![](https://img.haomeiwen.com/i15449003/1c578c80f8406f36.png)
表条件
![](https://img.haomeiwen.com/i15449003/8d8a2be774b6091a.png)
难易形容词+不定词
![](https://img.haomeiwen.com/i15449003/cfad76321dfc91f8.png)
惯用表现
easy表示事情,想表达“人容易于(犯错)。。”用apt
![](https://img.haomeiwen.com/i15449003/5df3b323a1ee637f.png)
![](https://img.haomeiwen.com/i15449003/1762248c30494f6a.png)
04
不定词的其他用法
enough to 够。。而可以。。。=》so...that
![](https://img.haomeiwen.com/i15449003/d1a06dedcd72536b.png)
![](https://img.haomeiwen.com/i15449003/b87fd058d334ce96.png)
![](https://img.haomeiwen.com/i15449003/b6c9ade62a9ed2ed.png)
![](https://img.haomeiwen.com/i15449003/bd4048ee584bae35.png)
05
![](https://img.haomeiwen.com/i15449003/072674e1e862bc1c.png)
![](https://img.haomeiwen.com/i15449003/5c990a6d6128e970.png)
感官动词后面再遇到动词用原型不定词
![](https://img.haomeiwen.com/i15449003/ad58d0cd200bd40f.png)
感官动词在被动语态中要用to不定词
![](https://img.haomeiwen.com/i15449003/8376ec643de55513.png)
在家用come home,不在家用get home
使役动词get后面用get...to不定词,help后面可用可不用to
![](https://img.haomeiwen.com/i15449003/57c9132291131522.png)
![](https://img.haomeiwen.com/i15449003/0f0e89533bd547c3.png)
![](https://img.haomeiwen.com/i15449003/c0683cf90fb9253a.png)
06
seem,appear (似乎)后面接不定词,也可以接形容词
![](https://img.haomeiwen.com/i15449003/dc49bff344fb3fd7.png)
所有格和冠词a/an不能同时出现在名词前
![](https://img.haomeiwen.com/i15449003/159571eeaf40d9c6.png)
![](https://img.haomeiwen.com/i15449003/433e031559b56b3b.png)
![](https://img.haomeiwen.com/i15449003/63cec4c5e2a41f4b.png)
07
![](https://img.haomeiwen.com/i15449003/963ea7d6dd8d5233.png)
![](https://img.haomeiwen.com/i15449003/698d32271926ad82.png)
![](https://img.haomeiwen.com/i15449003/56f1327c57a01f2a.png)
![](https://img.haomeiwen.com/i15449003/3fc6d4816a6c1ba9.png)
![](https://img.haomeiwen.com/i15449003/dfea3827906d60c1.png)
![](https://img.haomeiwen.com/i15449003/d6c826291a707fc9.png)
08
![](https://img.haomeiwen.com/i15449003/acf8a019a9c548c8.png)
![](https://img.haomeiwen.com/i15449003/12a9a69ba81c64b3.png)
![](https://img.haomeiwen.com/i15449003/2381543c79ac1f4f.png)
![](https://img.haomeiwen.com/i15449003/99ed14812d93b441.png)
![](https://img.haomeiwen.com/i15449003/9b1ce8b2dcaf0f23.png)
![](https://img.haomeiwen.com/i15449003/278676dc3b883a01.png)
![](https://img.haomeiwen.com/i15449003/b4bc044676c0fdd4.png)
![](https://img.haomeiwen.com/i15449003/287a2949e99d9a84.png)
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