difficulty meet never give up on one's/the way (to) 介词与其它词类的搭配 一般过去时 让步状语从句

children help responsibility shouldn't get rid of 动名词作宾语 介词与其它词类的搭配 情态动词(not)+动词原形

bank emergency money in case of 介词与其它词类的搭配 一般过去时

company job money apply for run out of 现在分词作状语 介词与其它词类的搭配 一般过去时 现在分词的完成式：having done

although between come(came come) convenience life(pl.lives) love people 介词与其它词类的搭配 一般现在时 让步状语从句 语法一致 关系代词who引导限制性定语从句

friend happiness measure sadness share with(随身携带，在身边) 介词与其它词类的搭配 情态动词(not)+动词原形

break(broke broken) 一般过去时 关系代词who引导限制性定语从句 at a loss

expectation parent in order (not) to do sth. live up to study hard 介词与其它词类的搭配 一般过去时 不定式的一般式：to+动词原形 make the most of

fight(fought fought) never should that war which win(won won) 介词与其它词类的搭配 关系代词that引导限制性定语从句 关系代词which引导限制性定语从句 情态动词(not)+动词原形 in the long run

big cause city problem sleep(slept slept) 可数名词的单复数 不可数名词 情态动词(not)+动词原形