MaXmOuSe  +  99336 Sat, 14 May 05 06:22 PM This is the sentence - Tom didn't go to school, and 1)Mary didn't, too. 2)either did Mary. 3)neither did Mary. 4)so did Mary. I'm sure they won't do well on their test. My question is which is the correct from 1,2,3,4.And when we us this four ?And what's the difference between them ? Examples with sentences please ! MaXmOuSe Joined on Sun, Apr 24 2005 Full Member 200 High aims, high achievements! Difference Between

	pieanne  +  99338 Sat, 14 May 05 06:29 PM Hello, Maxmouse, You might think of dropping the imperative when asking questions? "Tom didn't go to school, neither did Mary. I'm sure they won't do well on/in? their test" When two persons don't do the same thing, in the simple past Can't find an example with 1) Can't find an example with 2) 4) "Tom went to school yesterday, and so did Mary" When two persons do the same thing in the simple past pieanne Joined on Thu, Jan 20 2005 South of France ...But I'm Belgian! Veteran Member 7,517 I'm glad to help, but I'm not a native! And please excuse my typos... Simple Past

	MaXmOuSe  +  99340 Sat, 14 May 05 06:43 PM why not so did mary or either did mary ?Maybe because they are for present tenses ? or I am in mistake MaXmOuSe Tenses, Present Tenses

	pieanne  +  99344 Sat, 14 May 05 06:52 PM It's not a matter of tenses. Let's stick to the simple past, but it works with all tenses. When the first sentence is negative, you need "neither + aux + S" Tom didn't go to school, neither did Mary Tom doesn't go to school, neither does Mary Two persons don't do the same thing When the first sentence is positive, you need "so + aux + S" Tom went to school, so did Mary Tom goes to school, so does Mary Two persons do the same thing The construction "either + aux + S" isn't known to me. it's "either ... or ... "; you use it when you have to make a choice between 2 possibilities. "either Mary or Tom will go to school tomorrow" (only one of them will go) pieanne Constructions, Tenses, Negatives, Simple Past