1. come into
🔹核心词义：主要表“进入(空间);获得(财产、权利等);开始(某种状态);继承”，强调“某种状态的开始/启动”。
🔸 常见搭配：
come into money/property/fortune(继承财产/获得财富)
come into power(执政、掌权)
come into effect(生效)
📓 例句：
The new law will come into effect next month.
新法律将于下月生效。
2. go into
🔹核心词义：原形短语，主要表“进入(空间);深入研究/探讨;从事(某职业/领域);投入(时间、精力等);陷入(某种状态)”，强调动作的“主动深入、刻意投入。
🔸 常见搭配：
go into details 深入细节
go into the problem 深入研究问题
go into business 经商
📓 例句：
The research team will go into the cause of the disease in detail.
研究团队将深入详细地探讨该病的病因。
3. get into
🔹核心词义：进入(空间，较口语化);陷入(困境、麻烦等);养成(习惯);被录取(into后接学校/机构);对……产生兴趣”，强调“动作的达成或状态的转变”。
🔸 常见搭配：
get into trouble 陷入麻烦
get into a fight 卷入斗殴
📓 例句：
She worked hard and finally got into her dream university.
她努力学习，最终考上了梦想的大学。
4. run into
🔹核心词义：偶然遇见(=come across/meet by chance);撞上(物体);陷入(困难、债务等，=get into);达到(数量、程度)”，强调“动作的偶然性或意外性”。
🔸 常见搭配：
run into a tree 撞树
run into difficulty 陷入困难
📓 例句：
I ran into my former teacher on the street yesterday.
昨天我在街上偶遇了我以前的老师。
The new policy has _______ effect since last week, bringing great changes to people's lives.(答案：come into)
She _______ a lot of trouble because she didn't follow the instructions.(答案：got into)
I _______ an old classmate when I was walking in the park yesterday.(答案：ran into)
The scientists _______ the problem for years and finally found a solution.(答案：have gone into)
