请帮我翻译一下句子，谢谢！

4 students per group, one student will be the group leader, assigning tasks, one student record answers, one student supervise other students to see whether they used english to express themselves, the last student will report the progress of their group.

We'll divide into groups of fours. One will serve as the group leader, giving assignments, one recording the answers, one supervising to ensure that all communicate in English. Finally one representative will report how your group worked together.

each group consists of four students, including a group leader who does the assignment, an answer recorder, a superviser checking whether there is any language used beside english, and the last, a final reporter.