If Bobby doesn't work hard, he 'll fail the exam保持愿意_____Bobby_____hard,he'll fail the exam

If Bobby doesn't work hard, he 'll fail the exam保持愿意_____Bobby_____hard,he'll fail the exam i don't like them and bobby doesn't like them,either.的同义句 If it doesn't rain tomorrow ,I will visit the Great Wall.为什么用doesn't? If the person i like doesn't like me 是 If he doesn't finish it ,------- -------- she.填什么 if heart is big enough ,the fact doesn't count please tell （ ） about it if （ ） doesn‘t know If he doesn't go there next week,___I. if Alan doesn't change his mind ,he will be it doesn't matter后面加that还是if? If it doesn't kill you it only makes this weeked if it doesn't rain.译句 It doesn't matter if you don't know him well.if引导的是什么从句 If(如果 ）It __rainy.(doesn't/isn't/won't be/won't） if it doesn't 和 if it isn't什么时候用 有啥区别 If it——（not rain）tomorrow 为什么用doesn't? We will go fishing if doesn't rain tomorrow.为什么用doesn't rain 而不用won't rain呢 If it doesn't rain tomorrow ,I'll go hiking.为什么用doesn't而不用isn't? If he enjoys concerts,why doesn't he come with us?为什么用 doesn't 用won't