4 sentences

1. 警察的突然袭击让他措手不及。

   jǐng​chá de tū​rán xí​jī ràng tā cuò​shǒu​bù​jí.

   The sudden police raid caught him off guard.

   Source: Dong Chinese Dictionary

2. 他问的问题很唐突，让人措手不及。

   tā wèn de wèn​tí hěn táng​tū, ràng rén cuò​shǒu​bù​jí.

   His question was very abrupt and caught people off guard.

   Source: Dong Chinese Dictionary

3. 这种协同作战的方式让敌人措手不及。

   zhè zhǒng xié​tóng zuò​zhàn de fāng​shì ràng dí​rén cuò​shǒu​bù​jí.

   This method of coordinated operation caught the enemy off guard.

   Source: Dong Chinese Dictionary

4. 士兵们在必经之路上埋伏好，准备打敌人一个措手不及。

   shì​bīng men zài bì​jīng​zhī​lù shàng mái​fú hǎo, zhǔn​bèi dǎ dí​rén yī gè cuò​shǒu​bù​jí.

   The soldiers set up an ambush on the path, ready to catch the enemy off guard.

   Source: Dong Chinese Dictionary