put it in a simple way, you just add 要,将, 准备 or 将要 in front of verb.
examples:
original sentence:
我看一场电影.
future tense:
1. 我要看一场电影。
2. 我将看一场电影。
3. 我将要看一场电影。
4. 我准备看一场电影。
Using which one depends on the context. Sometimes, they all work in a sentence like the example, but sometimes, you'd better pick a specific one. It takes time to cultivate the language feeling.