到時〔-时〕 dou³ si⁴ {dàoshí}

(adverb phrase) When the time comes by

到時〔-时〕 dou³ si⁴ {dào shí}

at that (future) time

到時候〔-时-〕 dou³ si⁴ hau⁶ {dào shí hòu}

1. when the moment comes
2. at that time

到時到候〔-时--〕 dou³ si⁴ dou³ hau⁶ {dào shí dào hòu}

by the right time