A Mandarin Corner YouTube video describes "3 Things Chinese Like about Foreigners". One sentence from this dialogue is the following:

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Shǒuxiān wǒ juédé wàiguórén yǒu shíhòu tài guòyú kāifàng.

Which I translate (directly) to:

First, I feel foreigners are sometimes too excessively open.

What's confusing me is the use of both:

  • (tài) = too, and
  • 过于 (guòyú) = excessively

It seems like one of these is redundant.

Question: Why do both 太 and 过于 occur in this sentence?

  • 1
    similarly 只不过 #2911!
    – user6065
    Commented Apr 4, 2018 at 4:48
  • 过 + adj, 过于 + adj, enhanced version: 太过 + adj or 太过于 + adj. 于 is used for conjunction only, it does not have any meanings.
    – xenophōn
    Commented Apr 4, 2018 at 13:05
  • 过高 and 过于高 have same meaning
    – xenophōn
    Commented Apr 4, 2018 at 13:07
  • This is just too too. Commented Apr 4, 2018 at 17:01

5 Answers 5


I'm going to convert my comments into an answer to offer another POV to the already given answer.

太过于 is a set phrase.

KEY defines:



and KEY French defines it:


Perhaps this is similar to English usage of too + overly. It's a phrase we often use in English too. A quick google search gives me results like: too overly complex, too overly dependent and too overly ambitious - seems to be about the same logic.

ICIBA also defines it as:

too much

giving examples:

  1. She's too protective towards her children; she should let them be more independent.

她对孩子太过于爱护, 她应当给他们更多的独立性.

  1. Cheese, like oil, makes too much of itself.

乳酪, 如同石油一样, 太过于引人注目了.

  1. Don't be so quick to judge!


Examples of usage (emphasis is my own):

Sina: 周航:很多时候的焦虑是太过于关注短期的东西


Sina: iOS 12加快淘汰速度,iPhone6确实太过于老旧了!!

而今天,还需要给大家再次强调,如今都已经是3月份了,如果按照苹果的更新速度,很快将会在秋季之前发布最新的iOS 12系统,这无疑会加快淘汰的速度,因为iPhone6太过于老旧了。

Google Books: 道解《黄帝内经》(上、下)


and the kicker:

Google Books: 遇见成功的自己


  • 太过 or 过于 can replace 太过于 in all the examples in your answer. 太过于 might had became a set phrase because too many Chinese mixed 太过 and 过于 together like that guy in YouTube
    – Tang Ho
    Commented Apr 4, 2018 at 4:09
  • @TangHo Yeah, a lot of words mean things they didn't used to an vice versa. I think in this case it's already become a set phrase in usage.
    – Mou某
    Commented Apr 4, 2018 at 4:11
  • 2
    "too overly" sounds very wrong to me as an English speaker. "Too complex" or "overly complex" is fine, but not "too overly complex".
    – JBentley
    Commented Apr 4, 2018 at 10:54
  • @JBentley Perhaps it’s a regional thing then, I remember hearing it often enough myself. Verbatim results for "too overly" on google come up to: 174,000 google.com.sg/…
    – Mou某
    Commented Apr 4, 2018 at 12:06
  • Google n-grams does show some results for "too overly", but they're much lower than the surroundings. It probably is a regional dialectal thing.
    – Schism
    Commented Apr 4, 2018 at 21:14

价格太高 may refer to something cost too much or unaffordable, and 价格过高/价格过于昂贵 may refer to something unworthy.

太开放 probably means they are too open that you can't take it personally.

过于开放 means they are so open that in some aspect, it may be bad for themselves. The people who are supposedly open may or may not care, but it changes many things that breaks the usually logic of the implied aspect, or assumed common sense, that the opinion of the person who say that about what would usually work may fail in this case.

太过于开放 means it could be too bad for themselves, or it is bad for themselves in too many aspects, or something is much more likely to fail or more difficult to fix.

The 3 terms are more different in the case about prices. One may consider something unaffordable but still want to buy it, where you can't say 过高, and consider something else cheap but still not as useful as how it costs, where it probably invite some discussions if you say 太高. Still, in many cases one can be implied from another, unless the context says otherwise.

In the cases about something like openness, it's not unusual for someone to mix them up completely. 太过于开放 surely does NOT mean "it might be not that bad, but it is at least not for me". Actually, "it is too bad", but without watching the video it's not sure whether "I can't take it, fix it, ignore it or have a workaround" is implied, or whether he even notice this distinction.


This usage is conversational, you wouldn't see it in writing. Unless, of course, the writing is trying for a conversational tone. Presumably the speaker started with "太..." but felt that wasn't strong enough and added the 过于.

Grammatically, there's the difference that 太 is (just) an adverb and 过于 is more like a verb. To represent the sentence in English, you could write something like:

Foreigners are overdoing (过于) being open (开放) way too much (太)

Which isn't exactly correct usage, but does sound like something a young person might say.

I'd like to note that 过于 can't normally be translated as "overdoing", it's just the closest verb in English. The reason I say it's verb-like is because 过 is a verb, and the structure works out like this:

过 (surpass) 于 (compared to)

This structure is inherited from an older stage of Chinese grammar.


In this sentence, the speaker can choose 太过 (overly/ excessively) or 过于(overly/ excessively).

Instead of just pick one adverb, that guy mixed the two together

首先我觉外国人过于开放 and 首先我觉外国人太过开放 express the same meaning for the sentence. No need to write "太过于"


太过于 vs 过于, the extent is different. 太过于 denotes larger extent.


过于: overly

太过于: much overly

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