mom told me not to tell a lie
i didn't hnow who was knocking at the door so loudly
i wanted to know had he had breakfast in that street我觉得复合句主要就是在合并时注意前后的主时态是一致的，至于原来是完成时还是进行时都是应该保留着的，只是前面如果是过去时，那么后面的完成时就该变成过去完成时mom told me ,don't tell a lie.mon said嘿嘿，给你的句号逗号看反了这是要用mom said来是吧mom said not to tell a lie.因为后面原句是祈使句，变成间接引语的时候要用不定式的形式