have to 有过去式吗?

have to 有过去式吗? have got to真的有过去式吗? Often后加 have to 句型,要用过去式吗 现在完成时,过去式have gone to 和 went to 有什么区别都不是走了都没回来吗?如 Where is Jack?He________ his country yesterday. have过去式 have a good time有没有过去式? where to go by train有短语过去式吗 have to加动词的过去式,had to加什么? look forward to 后面永远跟动词ing形式吗?即使前面有个have been 后面的动词不用变过去式的吧?比如说i have been looking forward to ----from my parents. rain有过去式吗 has 有过去式吗? “can”有过去式吗? must有过去式吗 should有过去式吗? some有过去式吗 thank 有过去式吗 with有过去式吗? BEAT有过去式吗