lǎo / shī / yòng / tú / piàn / bāng / zhù / xué / shēng / lǐ / jiě / xiàng / xíng / wén / zì / de / tè / diǎn老师用图片帮助学生理解象形文字的特点。The teacher used pictures to help students understand the features of hieroglyphs.