wait为什么不双写加ing
turn什么时候加ing？
turn什么时候加ing？
两种情况下turn加ing：
①动词ing形式时，拐弯，回转
The borders between documentary, fictional and experimental films are very blurred for me, said Huang Weikai, 38, who trained as a landscape painter before turning to cinema.
“对于我来说纪录片，故事片和实验电影之间的界限是很模糊的，”38岁的黄伟凯说，他在转向电影之前是一位山水画家。
②名词形式时，转弯处
Take the opposite side of the road; and when you get to the end of it, turn on the left; and then take the first turning to the right.
您横过这条马路；当你走到路的尽头时，向左拐；然后，在第一个转弯处向右拐。
英语谁加ing？
英语中要加ing的情况还是很多的。
第一，动词后加-ing，比：work/working工作，sleep/sleeping睡觉，wait/waiting等待，study/studying学，read/reading读，talk/talking谈话
第二，不发音的-e结尾的动词去掉e后再加-ing，比如：smile/smiling微笑，move/moving，write/writing写。
还有辅音字母之类的，很多。
wait的ing形式是什么？
wait的ing形式：waiting
I had to wait a full hour for the bus .
我等公共汽车足足等了一小时。
Wait a moment , let me give you a demonstration .
先让我做一下示范。
Wait a minute, i have a bone to pick with you .
且慢，我要和你算帐。
He waited a moment and cleared his throat .
他等了一会，清了清嗓子。
Waiting any longer could be even more dangerous .
再等就会更加危险。