为什么用if而不用becausei buy a dictionary yesterday if i had time

为什么用if而不用becausei buy a dictionary yesterday if i had time if you work hard ,you will succed为什么work后用hard,而不用hardly 在宾语从句中,为什么if 后用any,而不用some? i cannot remember if i posted the letter 为什么后面用过去式而前面不用 if you park your car in the wrong place. 这里为什么不用at而用in if i were a boy again为什么用were而不用was ___ you are very tired, take a rest.为什么用Since,而不用if Susan is walking slowly as if she were tired问:为什么用were而不用was Let me know whether you love me.为什么用whether,而不用if?同上 谢谢 要快哦~ If you were me ,what would you do 为什么用were 而不用was? 为什么第7题用when而不用if? 为什么If you were me、me用宾格而不用:I 为什么要说If I were a fairy,而不用If I am a fairy? We will go fishing if doesn't rain tomorrow.为什么用doesn't rain 而不用won't rain呢 If today were the last day.那句话中为什么用were,而不用was.求高人指点 She has read so many books that it seems as if everything she knew,为什么用knew而不用knows! if you are invited for 7：00 you are supposed to arrive on time为什么用“for”而不用“at” If it doesn't rain tomorrow,I will go fishing.为什么要用doesn't而不用isnt