Question

1．他太虚弱了，让他一直在电脑前工作是不可能的．
He isso weak that it's impossible to keep him working in front of the computer．

Answer 1

分析 so weak that it's impossible to keep him working．

解答 答案：so weak that it's impossible to keep him working．这里是说客观事实用一般现在时，表示如此…以致于，用so/such…that，这里是用形容词weak，表示如此虚弱，故用副词so来修饰weak，故so weak that，表示做某事是怎么样的用it作为形式主语，动词不定式作为真正主语的句型it's+adj+to do sth，形容词不可能的impossible，让某人一直做某事keep sb doing sth，故 keep him working，故答案是so weak that it's impossible to keep him working．

点评 such…that作"如此…以致"解，连接一个表示结果的状语从句．与so…that 意思相同，但用法不同．如：so…that这一结构中，so后边可加形容词或副词，
而such后边要用名词（这个名词前面可以带形容词，也可以不带）He has made such great progress that the teachers are pleased with him．
他进步得很快，老师们对他感到很满意．