早知文理百科

participate in 参与; Ill participate in cet-6. go in for 参加; I go in for judo. take part in 参加; Would you like to take part in it? 参加 join...

正确的形式应该是eating. eatingn.吃;饮食；v.吃;吃饭;用餐； Research indicates that eating habits are changing fast. 研究显示，饮食习惯正迅速改变。 ...

have to be可以看作情态动词,本身是一般现在时态,但表示将来;be done中的be是助动词,与done一起组成被动语态； have to be 意思是必须是。 You have to be h...