1. Have you ever asked yourself why people often have trouble learning English?

句意：你有没有问过自己，为什么人们学习英语总是有困难？

have trouble (in) doing sth. =have difficulty (in) doing sth. 做某事有困难

例：人们理解不同的英语口音总是有困难。

Students often ________________________ different English accents.

have trouble understanding