since引导的主句使用的必须是持续动词吗?many changes____(take) place since the

since引导的主句使用的必须是持续动词吗?many changes____(take) place since the invention of the TV.
该填什么?不都是出现for与since主句谓语动词用持续动词吗?那么take是瞬间动词吧?怎么转换成持续动词?
请问Tom has changed a lot since he come to China.这句话change是瞬间动词吧？指的是Tom吧？

have taken
那个since+持续动词 指的是后面的 “发明” 不是指take
再问： 请问Tom has changed a lot since he come to China.这句话change是瞬间动词吧？指的是Tom吧？怎么解释
再答： since的用法：译作“自从…以来” (1)接时间点：如 I have stayed in that country since 1995. 要求：谓v.用现在完成时，而且须是延续性动词。 (2)接一段时间 + ago：如 They have lived in that house since two years ago. 要求：谓v.用现在完成时，而且须是延续性动词。 (3)接时间状语从句：如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求：主句的谓v.用现在完成时，而且须是延续性动词；从句的谓v.用一般过去时，而且须是终止性动词。 (4)用于句型“It’s / It has been + 一段时间 + since + 时间状语从句”中，译作“自从…以来, 已经…(时间)了”。如 It’s / has been three months since he moved to this city. 要求：主句的谓v.用一般现在时或现在完成时；从句的谓v.用一般过去时，而且须是终止性动词。 (5)用于句型“一段时间 + has passed since + 时间状语从句”中，译作“自从…以来, … (时间)已经过去了”。如上个例句还可写成：Three months has passed since he moved to this city. 要求：主句的谓v.用现在完成时，而且动词必须是has passed；从句的谓v.用一般过去时，而且须是终止性动词。 (6)注：当since用于否定句时，主句的谓v.可以是终止性动词。如 He hasn’t seen the film since last month. (7)相关词组：“从那时起”：ever since、since then、from then on. 注：ever since作为一个词组，放句尾可单独使用。如I have given up smoking ever since. 另外，还可在since后接句子。since前加ever，只是加重语气而已。如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句，译作“由于；因为”，相当于because。如 Since he was lazy, he didn’t finish his homework. 看看这个？