The new English teacher has created a very favourable impression.

这个新英语老师给人留下非常好的印象。

To complete the favourable impression, she then told him what Mr. Darcy had voluntarily done for Lydia. He heard her with astonishment.

为了要使得父亲对达西先生更有好感，她又把他自告奋勇搭救丽迪雅的事告诉了父亲，父亲听了，大为惊奇。