1.travels 这是真理,没有必要变时态
2.helping 宾语从句中动名词做主语
3.to help 不定式做宾语从句主语,表示具体帮助的人
4.seems to be seem 的两种用法
It seems that sb/sth is ...= sb./sth.seems to be ...
1.travels 这是真理,没有必要变时态
2.helping 宾语从句中动名词做主语
3.to help 不定式做宾语从句主语,表示具体帮助的人
4.seems to be seem 的两种用法
It seems that sb/sth is ...= sb./sth.seems to be ...