لَيَعْلَمُ الطَّالِبُ الْجَوَابَ — The student knows the answer.
سَيَشْرَبُ الطِّفْلُ الْمَاءَ — The child will drink the water soon.
سَوْفَ نَعْمَلُ فِي الْمَدْرَسَةِ — We will work at the school.
Notice that لَـ and سَـ are attached, while سَوْفَ is separate. The verb after each marker keeps its own person form.