Aggravate & worsen&exacerbate

1.aggravate -

1.1-使病情加重，活着使不开心，不好的事恶化。

1.2-

eg-

pollution can aggravate asthma.

2-worsen

2.1-强调比以前变的更坏。

2.2－

eg:

her health has worsened considerably sincewe last saw her.

3.exacerbate-

3.1-特指病情活着问题的恶化。

3.2-

eg:

his aggressive reaction only exacerbated thesituation.