题目内容：

初中英语句子成分划分
Tomorrow they will cilmb over a high mountain.Nobby wants to make friends with selfish people.The boy is strong enough to carry the heavy box by himself.

优质解答

Tomorrow （时间状语）they（主语） will cilmb over （助动词will+动词词组构成谓语）a high mountain（宾语）
Nobby（主语） wants（谓语） to make friends with selfish people（原因状语,不定式表原因）
The boy（主语） （is strong enough to 主语补足语)carry（谓语） the heavy box （宾语）by himself（宾补）.