"expect to do sth" 是一个常用的英语表达，用来表示“期待做某事”。这里的 "to do sth" 是一个动词不定式短语，作为 "expect" 的宾语，说明了所期待的具体动作或行为。以下是一些使用 "expect to do sth" 的例句：

1. He expected to finish the work by March.

2. I expect to see you again soon.

3. Children are expected to go to university by all their parents.

4. I expect to be paid promptly for the work.

5. I expected to pass the exam.

6. You can't expect me to finish the work in just two days.

7. I expect myself to achieve high grades in this test.

8. I expect him to call me tonight.

9. Organizers expect up to 300,000 protesters to join the march.

这些例句展示了 "expect to do sth" 在不同语境下的应用，从个人期望到集体预期，以及期待未来事件和结果。希望这些例句能帮助你更好地理解和运用这个表达。