【Joy :) 考上國小英語】評論
to produce 和後面的 to communicate 都有to+v ，因此句子結構才平衡。維基原文：Language acquisition is the process by which humans acquire the capacity to perceive and comprehend language, as well as to produce and use words and sentences to communicate.
【'Jian-hong Li】評論
Yen-Tzu Lu 感恩！
【祝大家順利上榜!】評論
acquire the capacity "to perceive and comprehend language",as well as "to produce and use".....As well as 連結兩個to +v