these trees turn green.这里的turn该怎么解释?

these trees turn green.这里的turn该怎么解释? These trees are 什么 high in,turn,the,spring,trees,green The l_____ of the trees turn green Trees and grass turn green这个turn怎么理解 the trees 和these trees有什么区别? These are apple trees(改为单数句) 求These are trees的中文, Turn these positive statements into negative statements When autumn comes ,the ____ the trees turn yellow.(leaf) the()of the trees turn yellow in autumn turn,the,autumn,trees,in,yellow,leaves,连词成句 Winter is ( ) and spring comes.Trees turn green. It rains sometimes and trees and grass turn green in it is spring.the trees turn green.英语短文 the leaves on the trees turn red or yellow. In this season,it gets warm.The trees turn Trees () green in spring.A.growB.turnsC.turn