四级语法
一般现在时
- 表示经常的或习惯性的动作,常与表示频度的时间状语连用,如: always、ustally、regularly、every morning、often、rarely、hardly、seldom
- 在时间或者条件状语从句中从现原则(when,if, until, as soon as, unless)
现在 | 过去 | 将来 | |
---|---|---|---|
一般 | do/does/be | did/was/were | will do/be |
进行 | doing | was/were doing | will be doing |
完成 | have done | had done | will have done |
完成进行 | have been doing |
P1语序和五种基本句式
英语五种基本句式
基本句式一:S+V(主+谓)
基本句式二:S+V+P (主+系+表)
基本句式三:S+V+O(主+谓+宾)
基本句式四:S+V+o+O(主+谓+间宾+直宾)
基本句式五:S+V+O+C(主+谓+宾+宾补)
主语:主语是一个句子中动作的发出者,通常由名词、代词等充当。
谓语:谓语是句子中说明主语的动作或状态的成分,由动词或动词短语充当。
系动词:连接前面的主语和后面的表语
表语:表语是说明主语是什么或怎么样的成分,在系动词之后,构成系表结构。
宾补:补充说明宾语,宾语不能直接说明谓语之间的对象
P2be动词的形式
- be,is,am,are,was,were,being,been起到连接作用
- am/is/are一般现在时
- was/were过去时态
- was单数主语的后面
- were复数主语的后面
- being是现在分词
- been是过去分词
Example
- The man is back.
- They are back.
- He wasback.
- They were back.
- They have been back.
- have been是过去分词的完成时态
be动词的用法
后面接名词、形容词、地点副词或短语作补足语。
- The man is a teacher.
- Mary's new dresses are colorful.
- My mother was in the kitchen.
Be动词的练习
- 他们是老师。(they , teachers)
- 他以前是一名老师.(he, a teacher, before)
- 他已经当了3年的老师。(for 3 years)
- They are teachers.
- He was a teacher before.
- He has been a teacher for 3 years.