初一英语语法【一般现在，现在进行，the be句型，.........

最好是语法，THANK YOU

我就简单举几个例子吧
一般现在时：she is beautiful.
现在进行时：she is eating a cake.
there be：there are so many roses.

请问你具体想知道哪一个方面？

宾语从句的用法 1.that引导宾语从句无意义，不充当句子成分常省略。但下列情况除外： （1）介词宾语从句的that不省略 （2） and连接的几个从句，第二个从句以后的从句的that不省略。 he told me that he had two sons and that they both had gone to college. （3）在动词+it+宾语补足语+宾语从句结构中，that不省略。 i heard it said that he had gone abroad we found it impossible that he could finish it in such a short time 2.whether ,if 引导宾语从句：两词可互换，但是下列情形除外： （1）whether从句中有or not （2）whether从句做介词宾语 everything depends on whether you agree with us 3.许多带复合宾语的句子，宾语从句经常移到句子后部，而用it做形式宾语。结构常是： 主语+动词+it+形容词/名词等宾语补足语+宾语从句 we think it wrong that he told a lie to everyone 4.宾语从句的语序要用陈述句语序 定语从句的用法 (一) 定语从句的作用 作用 在句子中作定语,修饰句子中的某一名词或代词,从句须放在先行词之后。 关联词 关联词用于引导一个定语从句,代替先行词在从句中充当一定的成分。 (二) 关系代词的作用 作用 例 句 1.作主语 1. the student who is talking with the monitor is lucy.（指人作主语） 2. a dictionary is a book which gives the meaning of words.（指物作主语） 2.作表语 3.she is no longer the girl that she used to be.（指人作表语） 3.作宾语 4the student whom (who)you want to see has come already.（指人作宾语） 5.the letter which i received yesterday was from a friend of mine.（指物作宾语） 4.作定语 6.the girl whose mother is a teacher studies very hard.（指人作定语） (三) 须用that引导的定语从句 情 况 例 句 nothing,everything,anything,much, all,little等不定代词作先行词时，常用that引导从句.something两者均可。 is there anything that i can do for you? 2.指物的先行词前被序数词修饰时。 the first thing that we should do is to help him. 3.指物的先行词前被形容词最高级修饰时。 this is the best foreign film that i have ever seen. 4.指物的先行词前被the very, the only, the same修饰时。 that’s the very tool that we are looking for. 5.先行词既指人又指物时。 they talked about the things and friends that they could remember. 6.主句是由who/which引导的特殊疑问句时。 who is the man that is standing over there? which is the tool that you are looking for?