He had overslept,so that he was late for work.I went to the lecture early so that I got a good seat.为什么一个SO THAT前加了逗号一个却没加啊/?

He had overslept,so that he was late for work.I went to the lecture early so that I got a good seat.为什么一个SO THAT前加了逗号一个却没加啊/? Yesterday I ()and missed the busA overslept B has overslept为什么会没有had overslept?他不是过去的过去吗? he had promised to come and help us and------c so he had d so had he the dream he had had for so many years ended there.为什么两个had呢? He was so hungry last night because he __nothing to eat since breakfastA had B had had Peter had to leave at once._____,without saying goodbye to his classmates.A.So did he B.So he didC.So had he Which one to choose?Thanks.Has he ____ overslept in the morning?A:still B:ever He's never overslept,改为反问疑问句这里是‘s是is还是has? he was so surprised that he couldn't believe what he had seen同意句he has____surprised_____believe what he seen -Tom had a good time at the party.- ,and A：so hehad；so did he B：；：；；：； The dream he had had for so many years ended there这里的两个had各自表示什么意思 well .l overslept.by the time l got up.my mother had gone to wor问句是什么? ——He shoule have been warned of the danger.——____,but he wouldn't listen to me.A.So he had B——He shoule have been warned of the danger.——____,but he wouldn't listen to me.A.So he had B.so had he C.so was he D.so he was He was injured in the accident last week,so he had three days o__ He () his bike so he has to walk there.A.lostB.has lostC.had lostD.loses he had ___little education that he can't teach __little children so such 为什么? he ( ) so quickly that he could win the race A.ran B.had run he is so absorbed in the work that he hasn't had a bite since morning