以下几个动词的过去式与过去分词是怎样的?
问题描述：
以下几个动词的过去式与过去分词是怎样的?
watch call thank please can need let play sound like help want join dance paint listen start survey
答
除了can和let外全是规则的：--------------------------watch-watched-watchedcall-called-calledthank-thanked-thankedplease-pleased-pleasedcan-couldneed-needed-neededlet-let-letplay-played-playedsound-soun...