The poet and writer are invited to give a speech at the meeting. poet 和 writer 共用一个冠词，指的是一个人身兼二职，所以谓语动词应为单数。把 are 改为 is. No one except my parents know...

An orphan is a child who’s parents are dead. 定语从句中表“…的”引导词只有 whose，所以把 who’s 改为 whose。 This is the very thing which I lost yesterday. 如果先行词为物且前有 the o...

名词性从句 We are talking about if this plan should be carried out. If 和 whether 都可以引导动词的宾语从句，如果从句做的是介词宾语，只能用 whether 引导。 所以把 if 改为 whether。 I can not deci...

We are going to talk about the problem discussing at the last meeting. 此处为分词作定语，问题应该被讨论，所以把 discussing 改为 discussed。 The girl dressed herself in red i...

及物动词用在主动语态时要有宾语，因此可以变为被动语态；不及物动词用于主动语态时不 能接宾语，因此无被动语态。 The two thieves have been disappeared. disappear 为不及物动词，因此不能...

英语的常用时态有十六种，一般根据上下文和时间状语来确定时态。 I will tell her about that when she will come tomorrow. 主句为将来时，其时间、条件、方式和让步状语从句中用一般现在时。因...