Sure, here are the 12 sentence structures in English:
1、Simple Sentence
2、Compound Sentence
3、Complex Sentence
4、Compound-Complex Sentence
5、Declarative Sentence
6、Interrogative Sentence
7、Imperative Sentence
8、Exclamatory Sentence
9、Loose Sentence
10、Periodic Sentence
11、Balanced Sentence
12、Parallel Structure Sentence