to think or believe something will happen, or someone will arrive

We are expecting a lot of applicants for the job. 我们预计会有很多人来应聘这份工作。

[ + (that) ] I expect (that) you'll find it somewhere in your bedroom. 我想你会在你卧室里找到它。

I expect (that) he'd have left anyway. 我估计无论怎么说他都已经离开了。

[ + to infinitive ] He didn't expect to see me. 他没有料到会碰见我。

The financial performance of the business is fully expected (= almost certain) to improve. 确信公司的财务状况会大有改观。

We were half expecting you not to come back. 我们一直以为你多半不会回来了。

normal and what usually happens

All parents of small children get tired. It's to be expected. 所有带小孩的父母都会非常累，这是可以想见的。

If they cut funding to the schools, it's only to be expected that test scores will fall.

The mountains are very hazardous and accidents are to be expected.

There were some delays. But that's only to be expected on a project of this size.

to think that someone should behave in a particular way or do a particular thing

I expect punctuality from my students. 我要求我的学生守时。

[ + to infinitive ] Borrowers are expected to (= should) return books on time. 借阅者应该按时归还图书。

to be pregnant

She shouldn't be lifting those boxes if she's expecting. 如果有孕在身，她就不该搬这些箱子。

Kate and Dom are expecting a baby. 凯特和多姆就要有孩子了。

He really needs a job because his wife is expecting twins in March.

She's expecting her third child.

Zoo staff didn't know the panda was expecting until shortly before she gave birth.