Be careful ____(not be)late for the train.答案是not to be,请问这里为什么加to

You will break it if you ____(not be) careful. Be careful ____(not be)late for the train.答案是not to be,请问这里为什么加to Please be careful .Do not make the same ____ next time.急 求求了 小心从椅子上摔下来 Be careful not to ___ ____ the chair Be careful.Don not ____ the window.A.broke B.dreaks C.break D.breaking don't be careful和be not careful的区别 be careful (not bite) by the dog be careful ------（not hurt）yourself be careful not to cut ____(you) on the broken glass.为什么是cut yourself而不是cut you Be careful and ____(A.not try to B.try not to C.don't try to D.not to try)have a fall on the ice. ____(not be) afraid. The boy ____(pressure) his nose to make faces2.Forbid is a kind of____(painful)killer3.Be careful not to ____(burning)your hands when you are cooking to be careful with electricity is important(用it改写)it ____ ____ ____ be careful with electricity I ___(tell) that there would be a meeting the next weekYou will fail the exam if you ____(not be) careful.请说明原因, bei careful not to fall ill这句话是对么be careful not to fall ill 同义句转换（每空一词）You must be careful not to fall off your bike.You must be careful ____ ____ ____ do not fall off your bike.The villagers took potatoes from the earth for food.The villagers ____ ____ potatoes for food.They thought eve you should be careful in your ____(choose)of friends. Be careful when you walk ____ the streetthroughacrossintofrom