Potential complement

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Also known as: 可能补语 (kěnéngbǔyǔ)  and complements of potentiality .\r\nPotential complements are a type of complement used to express the possibility of achieving an expected result in Mandarin. \r\nPotential forms most commonly occur in negative statements. Affirmative statements using the potential form are somewhat uncommon, and, when they do occur, are usually answers to questions (or as rebuttals).\r\n==Formation of Potential Complements==\r\nFor affirmative potential complements, 得 is placed between the action verb and the complement. For negative potential complements, 不 is placed between the action verb and complement. The structure of the potential form is:\r\nV + 得/不 + complement\r\nPutting 得 or 不 between an action verb and a result complement or direction complement changes them to potential complements. \r\n
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|+Resultative, Directional and Potential Complements |- ! Resultative Complement !! Directional Complement !! Aff. Potential Complement !! Neg. Potential Complement |- | 做 完 || || 做 得 完 || 做 不 完 |- | 听 懂 || || 听 得 懂 || 听 不 懂 |- | || 起 来 || 起 得 来 || 起 不 来 |- | || 爬上来 || 爬 得 上来 || 爬 不 上来 |-

|}\r\n\r\n===Objects with potential complements===\r\nObjects in sentences with potential complements can occur either after the complement or at the beginning of a sentence\r\n

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|+Objects occurring at the beginning of a sentence with a potential complement |- ! Object !! Subject !! Complement Phrase |- | 这个汉堡 || 我 || 吃得完 |- | 那个美女 || 他 || 看不见 |-

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|+Objects occurring at the end of a sentence with a potential complement |- ! Subject !! Complement Phrase !! Object |- | 我 || 吃得完 || 这个汉堡 |- | 他 || 看不见 || 那个美女 |-

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\r\n==When to Use Potential Complements==\r\nThe potential complement is roughly equivalent to saying something is able to be done in English. It is used when you want to express ability to achieve a result (as noted above, a result complement can be changed into a potential complement be inserting 得 or 不 between the verb and the complement) or ability to perform an action to a certain degree, similar to degree complements. Degree complements and potential complements often appear the same but are distinguished by the different contexts they appear in (see Contrasting Degree and Potential Complements section below). \r\n===Special Potential Complements===\r\nIn addition to common result complements that can be turned into potential complements and adjectives that form either degree or potential complements there are several complements that have unique meanings as potential complements.\r\n

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|+Special Potential Complements |- ! Complement !! Example Complement Phrase !! Example Sentence !! Explanation |- |rowspan="2"|动 | 走不动 || 我们累死了，走不动了。 (We are so tired, we can't (don't have the strength to) walk any more.)||rowspan="2"| The potential complement 动 indicates whether a person has the strength to be able to undertake an action whether that be moving them self (walking further) or an object. |- | 抬得动 || 她力气很大，她抬得动这张沙发。(She is very strong, she can lift this sofa.) |- |rowspan="2"| 下 | 坐得下 || 这间大房子，坐得下十个人。(This big room can seat ten people) |rowspan="2"| The potential complement 下 expresses the ability to fit in or on a given location. |- | 放不下 || 那个包，放不下这些书。(That bag cannot fit these watermelons) |- |rowspan="2"| 了 | 受不了 || 今天天气太热了，我受不了了。(Today it is too hot, I am unable to bear it) |rowspan="2"| The potential complement 了 expresses the ability do the verb. Note: 了 can also serve as an adjective complement which means ability to reach a degree |- | 来得了 || 今天开会我来得了。(I am able to come to today's meeting)

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\r\n=== Use of Potential Complement or Auxiliary Verbs 可以 and 能===\r\nIn most cases simple potential complement phrase will have the same meaning as a verb phrase using auxiliary verbs 能 or 可以. For example, 他爬得上来 has the same meaning as 他能爬上来 and 他可以爬上来. Likewise 我能做完, 我可以做完 and 我做得完 all have the same meaning.\r\n==Potential Complements in Questions==\r\nYou can form questions with sentences containing potential complements just as you would with any other sentence:\r\n* With a question particle

\r\n* 你 做得 完 吗 ？Did you finish it?
  • 你 受不 了 吗 ？Weren't you able to handle it?\r\n* 谁 吃得 完 整只 鸡 ？Who ate the entire chicken?
  • 你 觉得 你 考得 上 什么 大学？What college do you think you tested into?\r\n* 那间 房子 坐得 下 坐不 下 十个人？Will that apartment fit ten people in it?
  • 明天的音乐会 你 来得 了 来不 了？Are you able to come to tomorrow's concert?\r\n

\r\n==Comparing Degree Complements and Potential Complements==\r\nSome sentences that contain adjective complements may be indistinguishable as degree or potential complements when they are taken out of context. For example 跑得快 or 说得清楚 could serve as either potential or degree complements. The following table explains different meanings that one complement phrase could have as either a degree or potential.\r\n

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|+Examples of complement phrases that can serve as both degree and potential complements |- ! Example !! Degree Complement Translation !! Potential Complement Translation |- | 她说得清楚 || "She speaks clearly." || "She is able to speak clearly." |- | 他跑得快|| "He runs fast." || "He is able to run fast." |-

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Degree complements commonly are directly preceded by an adverb (他说得很清楚) distinguishing them from potential complements which are never directly preceded by an adverb.\r\n==Particles and Auxiliary Verbs with Potential Complements==\r\n* Aspect particles 了, 着, and 过 never occur after a verb with a potential complement, they may however occur after a potential complement phrase (after the complement).

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