so that同义句转换
My sister was______happy______say a word 展开
一、so．．．that与too．．．to的转换
二、so．．．that与enough to的转换
一、so．．．that与too．．．to的转换
当that引导的从句为否定式时，从句主语与主语的主语相同时，so．．．that可转换为too．．．to结构；若从句主语与主句的主语不相同时，so．．．that可转换为too．．．for sb．to结构。例如：
He is so young that he can't go to school．→ He is too young to go to school．
The box is so heavy thathe can'tliftit．→The box is too heavy for him to lift．
二、so．．．that与enough to的转换
1．当that引导的从句为肯定式时，若从句主语与主句主语相同时，so．．．that可转换为 enough to结构；若从句主语与主句主语不相同时，so．．．that可转换为enough for sb．to结构。例如：
Tom is so old that he can go to school．→Tom is old enough to go to school．
The box is so light that the child can liftit．→The box is light enough for the child to lift．
2．当that引导的从句为否定式时，若从句主语与主句主语相同时，so．．．that可转换为enough to的否定结构；若从句主语与主句主语不相同时，so．．．that可转换为 enough for sb．to的否定结构。注意：转换后的形容词（副词）要用其相应的反义词。例如：
The man is so old that he can't go to work．→The man isn't young enough to go to work．
The desk is so heavy that I can't moveit．→The desk isn't light enough for me to move．
so……that可以和too……to……或者enough to do sth替换。
eg：The car is so expensive that I can't afford it.
=The car is too expensive for me to buy.
（这辆车太贵了，我负担不起。）
eg: He is so old that he can take care of himself.
=He is old enough to take care of himself.
（他年龄足够大了，可以照顾自己了。）
需要注意的是：that后面加句子，to后面加动词原形。
so……that的用法和辨析
一、so....that，such……that，so that的辨析
1、so....that，意为“如此……以至于……＂，so用来修饰形容词或副词。
2、such……that，意为“如此……以至于……”，such用来修饰名词。
3、so that，意为“为的是，以便于”，用来引导目的状语从句。
eg：She was so angry that she couldn't speak.
（她太生气了，以至于说不出来话了。）
It was such a boring speech that i feel asleep.
（那是一个如此无聊的演讲，以至于我都睡着了。）
I read more books so that i can catch up with my classmates.
（我读更多的书，以便能赶上我的同学。）
二、so....that的用法
意为“如此……以至于……”，so用来修饰形容词或副词。
eg: The bag is so heavy that I can't carry it.
（这个袋子太重了，我提不动）
so．．．that与too．．．to的转换；so．．．that与enough to的转换。
当that引导的从句为否定式时，从句主语与主语的主语相同时，so．．．that可转换为too．．．to结构；若从句主语与主句的主语不相同时，so．．．that可转换为too．．．for sb．to结构。
当that引导的从句为否定式时，若从句主语与主句主语相同时，so．．．that可转换为enough to的否定结构；若从句主语与主句主语不相同时，so．．．that可转换为 enough for sb．to的否定结构。注意：转换后的形容词（副词）要用其相应的反义词。
引导名词性从句,状语从句和强调句。
that名词性从句。
①引导宾语从句。及物动词后的引导词that可省略。
② 引导主语从句。通常采用it作形式主语的句型。
③引导表语从句。
④引导同位语从句。引导同位语从句的that和引导定语从句的that是不同的。前者只起语法作用，在从句中不作任何成分；而后者在定语从句中作主语、宾语或表语。
以上内容参考：百度百科-that
My sister was_too_happy_to_say a word
这里的too...to不是否定,而是肯定.如:
The poor woman was only too happy to buy peace at the cost of eleven francs.
可怜的女人觉得花上十一法郎求一个清静,高兴得很.
来自辞典例句
2. Many MEPs would be only too happy to do that.
而欧洲议会成员们则会非常乐于做出这个决定.
3. A. The little girl is too happy to speak.
那小女孩高兴得说不出话来.
当that引导的从句为否定式时，从句主语与主语的主语相同时，so．．．that可转换为too．．．to结构；若从句主语与主句的主语不相同时，so．．．that可转换为too．．．for sb．to结构。例如：
He is so young that he can't go to school．→ He is too young to go to school．
The box is so heavy thathe can'tliftit．→The box is too heavy for him to lift．
二、so．．．that与enough to的转换
1．当that引导的从句为肯定式时，若从句主语与主句主语相同时，so．．．that可转换为 enough to结构；若从句主语与主句主语不相同时，so．．．that可转换为enough for sb．to结构。例如：
Tom is so old that he can go to school．→Tom is old enough to go to school．
The box is so light that the child can liftit．→The box is light enough for the child to lift．
2．当that引导的从句为否定式时，若从句主语与主句主语相同时，so．．．that可转换为enough to的否定结构；若从句主语与主句主语不相同时，so．．．that可转换为 enough for sb．to的否定结构。注意：转换后的形容词（副词）要用其相应的反义词。例如：
The man is so old that he can't go to work．→The man isn't young enough to go to work．
The desk is so heavy that I can't moveit．→The desk isn't light enough for me to move．
三、enough to的句式为否定式时，enough to可以转换为too．．．to结构。但转换后的too．．．to结构中的形容词（副词）要用其相应的反义词。例如：
He is not old enough to do the job．→He is too young to do the job．
Tom didn't walk slowly enough for us to keep up with him．→Tom walked too fast for us to keep up with him．
