sothat后面是加的完整的句子。inorderto后面加动词原形。IgotupearlyinthemorningsothatIcouldcatchthefirstbustoschool.Igotupearlyinthemorninginordertocatchthefirstbustoschool.
此外同样表示“为了”的意思的还有：soasto后面接动词原形,表示结果.sothat后面接从句,表示结果.inorderto后面接动词原形,表示目的.inordethat后面接从句,表示目的.