this car is different from other cars.同义句?

问题描述:

this car is different from other cars.同义句?
1.swimming in the river is very dangerous .2.this car is different form other cars.
3.i don't have time afternoon.4.ted is babysitting his sister at home thisweehend .
5.I am thinking about your advice.6.Vince went to bed after he showered.

都该同义句么?