标题：too
读音
[英][tu:] [美][tu]
释义
adv.也；太；很；非常
用法
通常用于肯定句中,且常置于句末,其前有逗号,但有时也可以插入句中。
柯林斯高阶英汉词典

1.ADDING SOMETHING OR RESPONDING补充；回应
2.INDICATING EXCESS过度
ADDING SOMETHING OR RESPONDING补充；回应
1.ADV（表示同样适用）也You use too after mentioning another person, thing, or aspect that a previous statement applies to or includes. 
'Nice to talk to you.' — 'Nice to talk to you too.'... 
“和你谈话很高兴。”——“我也一样。”
'I've got a great feeling about it.' — 'Me too.'...
“我感觉这次一定没问题。”——“我也是。”
Depression may be expressed physically too…
抑郁症也会表现在身体状况上。
2.ADV（用于补充性信息或评论之后，表示强调）而且，还You use too after adding a piece of information or a comment to a statement, in order to emphasize that it is surprising or important. 
We did learn to read, and quickly too...
我们确实学会了阅读，而且学得很快。
People usually think of it as a 'boys' book', which of course it is, and a very good one too.
人们通常把它看作“男孩读物”，它当然是，而且还是本很不错的男孩读物。
3.ADV（用于句末，表示强调）而且You use too at the end of a sentence to emphasize an opinion that you have added after a statement made by you or by another person. 
'That money's mine.' — 'Of course it is, and quite right too.'...
“那笔钱是我的。”——“当然是你的，而且也理应如此。”
'Oh excuse me.' — 'I should think so too.'...
“哦，请原谅。”——“你确实应该感到抱歉。”
The banks are being told to think about small businesses a little more. And about time too.
银行被告知要更多地为小企业考虑一下。的确是时候该这样做了。
4.ADV（幽默或孩子气地坚持己见）确实地，无可否认地You use too in order to emphasize in a humorous or childish way that you disagree with what someone else has said or that you refuse to obey them. 
'I'm getting a bike for my birthday.' — 'You are not.' – 'I am too.'
“我过生日想要一辆自行车。”——“不行。”——“我就要。”
INDICATING EXCESS过度
1.ADV太；过于You use too in order to indicate that there is a greater amount or degree of something than is desirable, necessary, or acceptable. 
Leather jeans that are too big will make you look larger... 
过于肥大的皮裤会让你看起来块头更大。
Eggs shouldn't be kept in the fridge, it's too cold...
鸡蛋不应保存在冰箱里，温度太低了。
The shaking inside may be due to low blood sugar, too much caffeine or too many cigarettes…
心悸可能是由于低血糖、咖啡因过量或抽烟过多。
2.ADV（与否定词连用，表示缓和语气、礼貌或谨慎）太，十分You use too with a negative to make what you are saying sound less forceful or more polite or cautious. 
Americans are never too keen to leave their beloved country…
美国人从不急于离开他们热爱的国家。
I wasn't too happy with what I'd written so far...
我对于目前已写完的这些并不太满意。
He won't be too pleased to see you.
他见到你不会很高兴的。
3.ADV（表示感谢，较为正式）极其，非常You use too when you want to emphasize in a fairly formal way your thanks to someone for something that they have done for you. 
'I'll try and get you a cake.' — 'Oh Ann you're too kind.'
“我会设法为你弄来一个蛋糕。”——“噢，安，你真是太好了。”
4.PHRASE太；极其You use all too or only too to emphasize that something happens to a greater extent or degree than is pleasant or desirable. 
She remembered it all too well...
她记得太清楚了。
She is all too aware that we should be grateful for good health…
我们应对健康的身体心存感恩，这一点她太清楚了。
The letter spoke only too clearly of his anxiety for her.
那封信再明白不过地倾诉了他对她的渴望。
5.PHRASE为时已晚If you describe a situation as too little too late, you are blaming someone for not doing enough to prevent a problem and for taking action only after the problem had become very bad. 
They think this is too little too late…
他们认为这已经为时已晚了。
The government is now bringing in laws to reduce air pollution. But, is it a case of too little, too late?
政府如今正引入法律以减少空气污染。但这是否为时已晚了呢？
6.too bad→see:bad；too clever by half→see:clever；none too→see:none；
Usage Note:
Too can be used to intensify the meaning of an adjective, an adverb, or a word like much or many. Too, however, also suggests an excessive or undesirable amount, often so much that a particular result does not or cannot happen. She does wear too much make-up at times… He was too late to save her. Too is not generally used to modify an adjective inside a noun group. For instance, you cannot say 'the too heavy boxes' or 'too expensive jewellery'. There is one exception to this rule, which is when the noun group begins with a or an. Notice the word order in the following examples. …if the products have been stored at too high a temperature… He found it too good an opportunity to miss… It was too long a drive for one day.
too 可用来强化形容词、副词或类似 much，many 等词的词义。但是 too 也表示数量过多，常会导致某一特定结果没有或不能发生。例如：She does wear too much make-up at times （她有时确实化妆过浓），He was too late to save her （他来得太晚，没能救活她）。通常too不用在名词词组中修饰形容词。例如，不可说 the too heavy boxes 或 too expensive jewellery。但当名词词组以a或an开头时例外。注意下面例子中的词序：if the products have been stored at too high a temperature（如果产品被储存在过高的温度下），He found it too good an opportunity to miss（他发现那是极好的机会，不容错过），It was too long a drive for one day（一天之中要驱车走那么远路程太长了。）
例句

Too far to walk?
走路太远了？
You play piano too?
你也会弹钢琴？
The book is rather too easy.
这本书过于浅显。
That's going a bit too far!
这有点过分了！
Provided by jukuu
I wished we could too.
我希望我们能过。
We don't take it too seriously.
我们并不是很认真的.
engxue.com
We can bring in some humour too.
我们还可以增加一些幽默。
You talk too much.
你说太多了。[1]