1.tree:主语 turn:谓语 green:状语 when spring comes:整个是状语从句,when是引导词,spring是从句里的主语,comes是谓语 2.it是形式主语,代指to talk to you is是谓语,比较特殊,是系动词 great pleasure 是表语 to talk to you 是真正的主语
1.trees turn green when spring comes. 这个句子含有一个时间状语从句 when spring comes。 前面的trees turn green 是主句, 主系表结构。 2.it is a great pleasure to talk with you. 这句话的真正主语是to talk with you。 it是形式主语 is系动词,谓语, a great pleasure 是表语