小升初网整理了2017年小升初英语语法大全，供同学们参考，希望能够帮助同学们提高学习成绩。
1. 用于引导限制性定语从句，主要与such， as， the same连用，其意为像 ……的凡是……的……一类的人 (物)。如：
He’s not such a fool as he looks.
他并不像看上去的那样愚蠢。
He is not such a man as would leave his work half done.
他并不是一个做事半途而废的人。
You must show my wife the same respect as you show me.
你必须对我妻子表现出与对我同样的敬重。
He smokes as expensive a cigarette as he can afford.
他抽一种他买得起的最贵的烟。
2. 用于引导非限制性定语从句，根据情况可位于主句之前或之后，有时也可插在主句中间，其 意为这件事这一点。如：
He is late， as is often the case.
他迟到了，这是经常的事。
As is usual with children， they soon got tired.
孩子们一贯如此， 他们很快就厌倦了。
David， as you know， has not been well lately.
大卫最近身体不太好，这你是知道的。
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