同义句转换It is not necessary for you to worry about your son‘s s

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同义句转换It is not necessary for you to worry about your son‘s safety.
------ -------- ------- ------- for you to------ ------- about your son‘s safety.

There is no need for you to be concerned about your son's safety.
再问：为何是need而不是necessity 呢？
再答： necessity 通常表示必要（性）；（迫切）需要；必需品；自然规律。如果这里硬要用necessity应该也是可以的，但是口语化的表示没需要都是no need. 好像很少用什么necessity

同义句转换It is not necessary for you to worry about your son‘s s 同义句转换Even if you are with your friends,it is better not to s there is not anying to worry about 同义句转换英语改同义句1.It's necessary for you to eat breakfast同义句:You ( )( There’s no need to worry about your father.（改为同义句） You _____ It's unnecessary for you to worry about _____(not have)the a it's necessary for you to go to bed early at night 同义句 It's not good for your health.同义句转换It‘s___ ___your health Don't worry about your grandma's healthy.(同义句转换) lt's necessary for student to study hard同义转换 It's not good for your eyes.的同义句按要求改写句子.1.It's necessary to visit him.(同义句转换)_______________