哪些英语单词要双写加ing的?1)以不发音的-e结尾的动词,须去掉e再加-ing。如:come—coming take—taking write—writing become—becoming但当将-e去掉会引起发音变化时,最后的-e应保留,如:agree—agreeing, singe—singeing另外,-e前为元音时,-e也应保留,如:canoe—canoeing。2)动词是闭音节的单音节词,或是...