：He said that he went to canada a few years ago.

是错误,正确的是：He said that he had gone to canada a few years ago.
原因：he said 是过去时,过去他说他去过加拿大,所以他去加拿大就是过去时的过去时,所以应该用过去完成时态 had gone.也就是说这个句子里有二段时态：1、他曾经说.2、曾经的曾经去过加拿大.不知道这样说你能不能明白.

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