Tā yòng le yī wǎnshàng cái zuò wán zhè fèn yǎnshì wéngǎo.
It took her all evening to finish this presentation.
Tips
usage
The official Microsoft Office translation for 'PowerPoint presentation'. In casual speech people just say PPT (read 'P-P-T') or 幻灯片 (huàndēngpiàn, slides).