this has not been easy
现在完成时（Present perfect）过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态.
翻译为这一直都不容易,比如说我国的复兴之路从开始到现在都不容易
this is not easy
翻译为不容易,比如说成功不容易,是过去,现在,将来都不容易
The park is always full of peaple on sunday
应该是be crowded with people吧He had a rest after he finished drawing the picture(保持原句意思）He_____have a rest __he finished drawing the picture怎么做He didn...
