初三英语的动词填空下面这些是不懂的1、Oh,you have come ,I thought you ---(not c

初三英语的动词填空下面这些是不懂的1、Oh,you have come ,I thought you ___(not come )yet.I was looking up your photo number.2、To our surprise,he passed the exam.We thought he ___(not pass)the exam this time.这两句前一句是用过去完成时,第2句用的wouldn't pass,为什么?这两句的thought的意思不一样么?为什么第2句会用将来时?ps:讲的越简单越好,少举一点例子,最好简单点,难了听不懂.