意为“以致于、结果是”时，引导结果状语从句，从句中一般不含情态动词。如：[文章版权 禁止转载:考试与评价 g!3vrFL?^. �=t&% FroG]
I had a headache，so(that) I went to bed early. 我头疼，因此睡得早。[文章版权 禁止转载:考试与评价 _h7} &(=G"P),FroG]
意为“以便、为了”，引导目的状语从句，从句中一般含有情态动词。如：[文章版权 禁止转载:考试与评价 Ll%h0+HYc$y '}" MbFroG]
I packed her some bread so that she wouldn't be hungry. 我给她包些面包，好让她不至于挨饿。[文章版权 禁止转载:考试与评价 e
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