叫句子成分.
先给的叫悬赏,后给的叫奖赏.
For a long time,both students and instructors have seemed contented with discussing grammar and understanding passages through reading,ignoring the oral communication which is much more important.
for a long time ---介词短语,作时间状语
both students and instructors 句子的主语
have seemed contented with 谓语
discussing grammar and understanding passages through reading 宾语
ignoring the oral communication(+定语从句)--现在分词短语作状语,表示“伴随情况”
which is much more important--定语从句,修鉓先行词the oral communication.