When a sentence has an auxiliary verb and a main verb, it is usual to put adverbs between them. For example:
当句子中有一个辅助动词和一个主要动词，副词经常被放在两个动词之间。比如说：
We have finally completed the project.
我们终于完成了这个项目。
Here “have” is the auxiliary verb and “completed” is the main verb; “have completed” is the present perfect tense.
在这里”have”是辅助动词而“completed”是主要动词，“have completed”是现在完成时。
More examples:
更多例句：
We have already heard about the outcome.
我们已经听说了结果。
The firm has frequently been praised for its commercial approach to problem solving.
这家公司经常因为其解决问题的商业方法受到表彰。
