[译] 上课开始的时候，老师提问我们动词的用法。
[误] In the beginning of the class,the teacher questioned us on verbs.

[正] At the beginning of the class,the teacher questioned us on verbs.
[注] “at the beginning of”意思是“在……开始的时候”，而“in the beginning”的意思是“起初，开始时”，可在句中独立作状语，相当于“at first”。