我不知道今天是星期二還是星期三。

I don't know if today is Tuesday or Wednesday.

Source: Tatoeba

Sentence Composition

1 我不知道 wǒbùzhīdào I don't know.
2 今天 jīntiān
  1. today
  2. the present time; now
=3 是 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)
=3 是 shì variant of 是 shì
=4 星期二 Xīngqīèr Tuesday
=4 星期二 xīngqī'èr Tuesday
=5 還是 háishi
  1. still (as before)
  2. had better
  3. unexpectedly
  4. or
=5 還是 háishì
  1. had better; it would be best (to do something); one would be well-advised to
  2. nevertheless; yet
  3. or
  4. still
=6 星期三 Xīngqīsān Wednesday
=6 星期三 xīngqīsān Wednesday