课文重难点

… expert who tries to keep animals and plants from becoming endangered.

定语从句，keep sb. from doing词组

We often talk about how important it is to take good care of ourselves and our planet, but we don’t always do as we say,” Steve says as he takes us on a tour of Green Park in Birmingham.

If we want to live a better life…we must learn to act in ways that do not harm other living things.

it is important to do sth.做某事很重要，感叹形式how important it is to do sth. ，

do as / what we say，as在此处相当于宾语从句中what的作用，

live / lead a…life，过一种…的生活

If we know more about what causes endangerment…

know something/little/a little/nothing/much about

对…了解一些/不多/一点/不了解/很多