if clause 条件子句 ; 假设子句 ; 条件附句
open IF-clause 开放性If
if-clause expressing condition if条件从句
assignment arithemtic IF clause 赋值算术IF子句
It points out that the correct comprehension of open IF-clause depends on the understanding of the semantic relationship between the main clause and the subordinate clause, as well as the context.
文章指出正确理解、把握、使用开放性If -条件句有赖于对主、从句间语义关系的认识以及具体语境的掌握。
Ask the students to make up sentences using the adverbial clause of condition with if.
要求学生使用 if 来组成条件状语从句。
Use this clause if the table must be up and available at any time.
如果该表在任何时刻都必须是可用的,那么应该使用该子句。
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