如果一個人在成人前沒有機會習得目標語言,他對該語言的認識達到母語者程度的機會是相當小的。

If a person has not had a chance to acquire his target language by the time he's an adult, he's unlikely to be able to reach native speaker level in that language.

Source: Tatoeba

Sentence Composition

1 如果 guǒ
  1. if
  2. in case
  3. in the event that
2 一個人 rén
  1. by oneself (without assistance)
  2. alone (without company)
3 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
4 成人 chéngrén
  1. to reach adulthood
  2. an adult
5 qián
  1. front
  2. forward
  3. ahead
  4. first
  5. top (followed by a number)
  6. future
  7. ago
  8. before
  9. BC (e.g. 293)
  10. former
  11. formerly
6 沒有 méiyǒu
  1. haven't
  2. hasn't
  3. doesn't exist
  4. to not have
  5. to not be
7 機會 huì
  1. opportunity
  2. chance
  3. occasion

classifier:

8 習得
  1. to learn
  2. to acquire (some skill through practice)
  3. acquisition
9 目標 biāo
  1. target
  2. goal
  3. objective

classifier:

=10 語言 yán language

classifiers: ,

=10 語言 yán
  1. (literary) to tell
  2. to tell
11
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 and 他人 rén)
12 duì
  1. right; correct
  2. towards; at; for
  3. concerning; regarding
  4. to treat (sb a certain way)
  5. to face
  6. (bound form) opposite; facing; matching
  7. to match together; to adjust
  8. to fit; to suit
  9. to answer; to reply
  10. to add; to pour in (a fluid)
  11. to check; to compare
  12. classifier: couple; pair
13 gāi
  1. should
  2. ought to
  3. probably
  4. must be
  5. to deserve
  6. to owe
  7. to be sb's turn to do sth
  8. that
  9. the above-mentioned
=14 語言 yán language

classifiers: ,

=14 語言 yán
  1. (literary) to tell
  2. to tell
=15 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 de "one made of leather" or 跑堂兒的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. or di in poetry and songs
=15 a taxi; a cab (abbr. for 的士 shì)
=15 really and truly
=15 (bound form) bull's-eye; target
16 認識 rènshi
  1. to know
  2. to recognize
  3. to be familiar with
  4. to get acquainted with sb
  5. knowledge
  6. understanding
  7. awareness
  8. cognition
17 達到 dào to reach; to achieve; to attain
18 母語者 zhě native speaker
19 程度 chéng degree; level; extent
=20 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 de "one made of leather" or 跑堂兒的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. or di in poetry and songs
=20 a taxi; a cab (abbr. for 的士 shì)
=20 really and truly
=20 (bound form) bull's-eye; target
21 機會 huì
  1. opportunity
  2. chance
  3. occasion

classifier:

=22 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=22 shì variant of shì
23 相當 xiāngdāng
  1. equivalent to
  2. appropriate
  3. considerably
  4. to a certain extent
  5. fairly
  6. quite
24 小的 xiǎode
  1. (coll.) young child; the little one(s) of the family
  2. (old) (humble) I; me; my (used by a commoner when speaking to an official)