汤姆的主要问题是他一点幽默感都没有

The main problem with Tom is that he has no sense of humor.

Source: Tatoeba

Sentence Composition

1 汤姆 Tāng Tom (name)
=2 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 跑堂儿的 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
=2 a taxi; a cab (abbr. for 的士 shì)
=2 really and truly
=2 (bound form) bull's-eye; target
3 主要 zhǔyào main; principal; major; primary
4 问题 wèn
  1. question
  2. problem
  3. issue
  4. topic

classifier:

=5 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)
=5 shì variant of shì
6
  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)
7 一点 diǎn
  1. a bit; a little bit
  2. (used in negative expressions) (not) the least bit
  3. (after an adjective, used to form the comparative) a bit more, -er
  4. a point (in a discussion etc)
  5. (calligraphy) dot stroke (、)
  6. one o'clock (abbr. for 一点钟 diǎnzhōng)
8 幽默感 yōugǎn sense of humor
=9 surname Du
=9 dōu
  1. all; both; entirely
  2. (used for emphasis) even
  3. already
  4. (not) at all
=9
  1. capital city
  2. metropolis
10 没有 méiyǒu
  1. haven't
  2. hasn't
  3. doesn't exist
  4. to not have
  5. to not be