3 sentences

1. 这个建议颇具建设性。

   zhè gè jiàn​yì pō jù jiàn​shè​xìng.

   This suggestion is quite constructive.

   Source: Dong Chinese Dictionary

2. 他提出了许多建设性的建议。

   tā tí​chū le xǔ​duō jiàn​shè​xìng de jiàn​yì.

   He put forward many constructive suggestions.

   Source: Dong Chinese Dictionary

3. ‪你能接受一些建设性的批评吗？

   ‪ nǐ néng jiē​shòu yī​xiē jiàn​shè​xìng de pī​píng ma?

   Can you take some constructive criticism?

   Source: OpenSubtitles