since就是从……时候开始的意思,当然是指一个时间点了,如：I started English learning since 2010.=I have studied English for 4 years
就是for和since后面跟时间问题,弄不懂,只知道for后面跟一段时间,而since后面?老师说：sonce后面可以跟
since就是从……时候开始的意思,当然是指一个时间点了,如：I started English learning since 2010.=I have studied English for 4 years