lose heart 丧失勇气
lose one’s heart to sb/sth 爱上，喜欢上
be worried about 担心(状态)
in trouble 处于不幸中
be sentenced to 被判处
be out of work = lose one’s job 失业
be equal to 相等的，平等的
be proud of / take pride in 以……而自豪
invite sb to do sth 邀请某人做某事
二、重点句子
1. Only then did we decide to answer violence with violence.
2. He strongly believed in the three principles.
3. I felt bad the first time I talked to the group.
4. He taught us during the lunch breaks and the evenings when we should have been asleep.
三、重要语法
在复合句中，修饰某个名词或代词的句子(做这个名词或代词的定语)叫定语从句，定语从句一般放在被修饰的名词或代词后面，被修饰的名词或代词叫做定语从句的先行词，它与定语从句之间要有一个词连接，这个词指代先行词的内容叫做关系词(关系代词或关系副词：that, which, who, whose, when, where, why)。先行词在定语从句中充当主语，宾语，时间，地点，原因状语。 结构：先行词+关系词+定语从句。
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