如题所述
that的用法：一、用作关系代词，引导限制性定语从句（that 在定语从句中作宾语时通常可省略）。
例句： He is the man that I saw yesterday.
二、用作连词，引导名词性从句和强调句。
1.引导宾语从句，及物动词后的引导词that可省略。
例句：I didn't expect （that ） he could win the championship.
2.引导主语从句，通常采用it作为形式主语。
例句：That she survived the accident is a miracle.
（It is a miracle that she survived the accident.）
3.引导表语从句。
例句：The trouble is that we are short of money.
4.引导同位语从句，用以说明或解释前面的名词。
例句：The fact that women can work as well as men is clear.
5.引导强调句。
It was Tom that found my pen in the classroom yesterday.
例句： He is the man that I saw yesterday.
二、用作连词，引导名词性从句和强调句。
1.引导宾语从句，及物动词后的引导词that可省略。
例句：I didn't expect （that ） he could win the championship.
2.引导主语从句，通常采用it作为形式主语。
例句：That she survived the accident is a miracle.
（It is a miracle that she survived the accident.）
3.引导表语从句。
例句：The trouble is that we are short of money.
4.引导同位语从句，用以说明或解释前面的名词。
例句：The fact that women can work as well as men is clear.
5.引导强调句。
It was Tom that found my pen in the classroom yesterday.
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