如果你愿意的话，我们可以在波士顿多待几天。

We could stay in Boston for a few more days if you like.

Source: Tatoeba

Sentence Composition

1 如果 rúguǒ
  1. if
  2. in case
  3. in the event that
=2 你 nǐ you (informal, as opposed to courteous 您 nín)
=2 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
3 愿意 yuànyì
  1. to wish
  2. to want
  3. ready
  4. willing (to do sth)
4 的话 dehuà if (coming after a conditional clause)
5 我们 wǒmen we; us; ourselves; our
6 可以 kěyǐ
  1. can
  2. may
  3. possible
  4. able to
  5. not bad
  6. pretty good
7 在 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)
8 波士顿 Bōshìdùn Boston, capital of Massachusetts
9 多 duō
  1. many; much; more; a lot of
  2. too many; in excess
  3. (after a numeral) ... odd
  4. how (to what extent) (Taiwan pr. duó)
  5. (bound form) multi-; poly-
=10 待 dāi to stay; to remain
=10 待 dài
  1. to wait
  2. to treat
  3. to deal with
  4. to need
  5. going to (do sth)
  6. about to
  7. intending to
11 几天 jǐtiān several days