only have ...

there is only ...

(used in combination with 才[cái]) it is only if one ... (that one can ...) (Example: 只有通過治療才能痊愈|只有通过治疗才能痊愈[zhǐ yǒu tōng guò zhì liáo cái néng quán yù] "the only way to cure it is with therapy")

it is only ... (who ...) (Example: 只有男性才有此需要[zhǐ yǒu nán xìng cái yǒu cǐ xū yào] "only men would have such a requirement")

(used to indicate that one has no alternative) one can only (do a certain thing) (Example: 只有屈服[zhǐ yǒu qū fú] "the only thing you can do is give in")