1. Have trouble (in) doing something
例句：She had trouble solving the math problem.
（她解这道数学题有困难）
介词

1. Have trouble (in) doing something
例句：She had trouble solving the math problem.
（她解这道数学题有困难）
介词

1. Have difficulty (in) doing something
（最常用结构，注意 difficulty 是不可数名词）
I have difficulty understandi

1. 动词短语（最常用）
struggle with (doing) something
例句: She struggles with understanding math formulas.

1. 动词短语（最常用）
struggle with (doing) something
例句: She struggles with understanding math formulas.

1. It's hard/difficult to do something
最基础表达
例句：It's hard to learn a new language at an older age.

学习英语时，我们常会遇到"表达困难"的窘境。就像探险家需要精准的指南针，掌握"做某事有困难"的正确英语表达，能让语言交流的航船顺利绕过暗礁。这句话的核心骨架是"have difficulty (in)

1. Have difficulty (in) doing something
结构：动词 + 名词 + (介词) + 动名词
例句：
I have difficulty (in) unders

1. Have difficulty (in) doing something
结构：动词 + 名词 + (介词) + 动名词
例句：
I have difficulty (in) unders

常用表达方式
1. Have difficulty (in) doing something
（介词 "in" 可省略，后接动名词）
例句: She had difficulty (in) ad