can后能接几个动词我知道如果用and的话,可以接很多个动词,比如i can sing and dance and swim.假如不用and连接,只用逗号,can后面能接几个动词?还是和刚才一样能接很多动词原形?又或者第二个动词开始是不是要用ing形式了?如果这样的话,又和can后面接动词原形矛盾了.我知道正常情况下,一个主语后面只能有一个动词,否则多出来的动词就得用ing形式.但是有了can的话,情况又会怎么样?

can 后面只能接原形动词.至于接几个原形动词合适,要不要加 ing,这要根据句子的长短、是否造成歧义、和语法结构是否允许来决定.例：
John can teach English,help students with math,take care of pre-school kids,and cook meals for them.
John can leave his highly-paid job behind,forget all his friends,say goodbye to his parents,and travel thousands of miles just for climbing mountains.
至于用加 ing的动词,通常出现在两种情况里面：动词的ing 形式作谓语动词的宾语,或者 ing分词短语作主句的伴随状语.例：
John can now handle answering phone calls,sending out signals and managing his own daily life after the accident.（作宾语）
John can walk out of the office without telling anyone,knowing that the boss will not be happy about it.（作伴随状语）