因為不知道該說什麼, 他保持沉默。

Not knowing what to say, he remained silent.

Source: Tatoeba

Sentence Composition

1 因為 yīnwèi
  1. because
  2. owing to
  3. on account of
2 不知 zhī
  1. not to know
  2. unaware
  3. unknowingly
  4. fig. not to admit (defeat, hardships, tiredness etc)
=3 dào
  1. (bound form) way; reason; principle
  2. (bound form) a skill; an art; a specialization
  3. (Daoism) the Way; the Dao
  4. to say (introducing a direct quotation, as in a novel)
  5. (bound form) to express; to extend (polite words)
  6. classifier for long thin things (rivers, cracks, shadows etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process
  7. (old) circuit (administrative division)

classifiers: ,

=3 dǎo
  1. (obsolete on its own in Standard Chinese) alternative form of / (dǎo, “to direct; to guide; to lead; to conduct”)
  2. alternative form of / (dǎo, “to direct; to guide; to lead; to conduct”)
4 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
=5 shuì to persuade
=5 shuō
  1. to speak; to talk; to say
  2. to explain; to comment
  3. to scold; to tell off
  4. (bound form) theory; doctrine
=5 yuè
  1. (obsolete on its own in Standard Chinese) alternative form of / (yuè, “happy; delighted”)
  2. alternative form of / (yuè, “happy; delighted”)
=5 tuō
  1. (obsolete on its own in Standard Chinese) alternative form of / (“to free; to relieve”)
  2. alternative form of / (“to free; to relieve”)
6 什麼 shénme
  1. what?
  2. something; anything
7
  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)
8 保持 bǎochí
  1. to keep
  2. to maintain
  3. to hold
  4. to preserve
9 沉默 chén
  1. taciturn
  2. uncommunicative
  3. silent