she is late for school 和 he is late for the party .为什么一个不加th

She is never late for school,late为什么不加s He is late for school He is sometimes late for school和He sometimes late for school he is always late for school中he后面为什么要加is? This is the reason why\for which he is late for school.为什么wh ------The boy is never late for school,is he?(142.32) She is late for school （because the traffic is bad）对加括号部分提问, She is often ___(late)for school. He is seldom late for school,____? He is never late for school,_________? He often is late for school. he is late for school today.