标签:条件状语从句 相关文章
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英语语法点:英语条件状语从句及用法 引导条件状语从句的从属连词有if, unless (=ifnot如果不,除非), as/so long as(只要), while(=as long as只要), supposing (that)/provided /providing (that)(假如), in case(假使)
Listen Read Learn Human beings have always used the resources of the Earth of their own development. The environment was changed for the use of man rather than changing our own nature to fit the environment. This past action has now caused us serious
as long as 和 so long as 均可表示只要,用于引导条件状语从句,两者没什么区别。如: I don't care so [as] long as she lets me be with her son. 只要她让我和她儿子在一起,我不在乎。 You can take my car as [so
能源和环境危机Fuel and Environment Crisis 人类一直利用地球上的资源来发展自身。环境因人的使用而改变,而人类并没有改变自己来适应环境。 Listen Read Learn Human beings have always used the resources of the Earth of their own development. The environment
连接词主要有 if, unless, as/so long as, on condition that 等。. if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。 unless = i
结构:if+一般现在时,主语+将来时 含义:如果,将要 例如:If you ask him, he will help you. 如果你请求他,他会帮助你。 If need be, well work all night. 如果需要,我们就干个通宵。 练一练 1. 如果你参
条件状语从句:分真实条件句和非真实条件句(虚拟语气) 重点:在条件(时间)状语中,用一般时代替将来时(可参见时间状语从句例子) 虚拟语气(见第六讲) 主要连接词: (1)if /