2 sentences

1. 忍耐是有限度的。

   rěn​nài shì yǒu xiàn​dù de.

   Patience has its limits.

   Source: Tatoeba

2. 他的耐心已经到了最大限度。

   tā de nài​xīn yǐ​jīng dào le zuì dà xiàn​dù.

   His patience has reached its limit.

   Source: Dong Chinese Dictionary