Biformed
a. 二形的, 二形结合的
🗣️ 情景例句
Lillian and I were married two weeks ago in Detroit. Lillian
和我已经在两周前在Detroit结婚了。
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
Practice dialogues like these.
这样练习口语。