第一句:They 主语, strained 谓语, to see the boat far away from them 动词不定式短语作目的状语。动词不定式短语中:the boat 宾语,far away from them 形容词短语作后置定语,修饰the boat 。
strained 谓语
to see 不定式
the boat 宾语
far away from them 宾语补足语(修饰boat)
that引导定语从句,修饰generations
这题太简单了,英语不好的同学过来练习一下吧。