hold(held held) traditional be fond of doing sth. next week 一般现在时 一般将来时的被动语态 that, whether, as, as if, as though, because引导的表语从句 关系代词who引导限制性定语从句

although see(saw seen) 现在完成时 一般现在时的被动语态 让步状语从句 语法一致

concentrate on stare at 过去进行时 过去进行时的被动语态 同位语从句的连接词 时间状语从句

previously uncomfortably look through 现在分词作状语 副词作状语 一般现在时 现在完成时的被动语态 which引导非限制性定语从句

fold look at 现在进行时的被动语态 祈使句的肯定形式 dress

happen prove question take place it 作形式主语 一般过去时 现在完成时 现在完成时的被动语态 连接代词和连接副词引导的宾语从句 让步状语从句

amaze approach bravery generation scientific truth look for 现在完成时的被动语态 语法一致 主谓宾

invention 现在完成时的被动语态

advance environmental important increasing medicine science in addition thanks to 介词与其它词类的搭配 现在完成时的被动语态

before guess title ask sb. about sth. 一般现在时 现在完成时的被动语态