「知识拓展」condition意为"条件"时，常用短语on condition that，表示"如果；在......条件下"；在美国英语中，也经常用under the condition that.如：I will come on condition that Peter is invited. They agreed under the condition that the matter be dealt with quickly.

3. devote

「课文原句」She devoted all her life to medical work for Chinese women and children. （P1）

「名师点拨」devote vt. 意为"投入于；献身"，其宾语后常与介词to搭配，to后接名词、代词或动名词。devote ... to ... 意为"献身；致力于"，指把自己、时间、精力等奉献给某种工作或事业。

如：He has devoted his whole life to benefiting mankind. The girl， to whom he was devoted， died in a traffic accident by chance. After he has retired， he will devote himself to gardening.

4. behave

「课文原句」Jane has studied these animals for many years and helped people understand how much they behave like humans. （P2）

「名师点拨」behave vi & vt. 意为"举动；举止；行为表现"，如behave well / badly等。其名词形式为behaviour，指"行为；态度；举止"。

如：The parents encouraged the children to behave well in front of the guests. My camera has been behaving well since it was repaired. Everyone praises the children's good behaviour.