Question

They are trying to do what they can to protect the environment.分析下这个句子！

Answer 1

此句中，they是主语，are
trying是谓语动词try的现在进行时态，在句中作谓语，to
do
what
they
can是不定式短语，作are
trying的宾语。在不定式to
do
what
they
can中，what
they
can是宾语从句，作do的宾语。（what
they
can完整应该是what
they
can
do，what作can
do的宾语。因为句子前面有了一个do，此处省略了，注意两个do）。至于to
protect
the
environment，是目的状语。