cooperation friction matter reduce 一般现在时 主语从句的连接词 that, whether, as, as if, as though, because引导的表语从句 on the basis of

priority rather than 不定式作表语 现在分词作状语 介词与其它词类的搭配 一般现在时 语法一致

ability campaign cultivate enrich fund-raising improve organize teamwork in addition to 动名词作宾语 现在完成时 语法一致

dust former glory level skill return sth. to sb. 介词与其它词类的搭配 一般过去时 现在完成时 结果状语从句

difficult job quit retirement same 动名词作主语 现在分词作定语 一般现在时 让步状语从句

belief failure hold(held held) ideal only problem by+交通工具 部分倒装

charming expect farmer temperature in the past 现在分词作状语 一般现在时 一般过去时 过去将来时 连接代词和连接副词引导的宾语从句 比较状语从句

balance concentration enthusiasm exactly professional 一般过去时 时间状语从句 It be…that/who强调句型 sum up

hope be full (of) in the air 一般现在时 现在完成时 which引导非限制性定语从句

development effort research result reward 一般将来时的被动语态 含情态动词的被动语态 条件状语从句