...:I know here masks (are /is/ served / sold / saw/ seen) (as) one of the most common things
.翻译的大致意思是:我知道在这里,口罩是 /被视为最普通平常的事物,最容易买到、得到的事物。所以①括号里的助动词时态和数的问题:是用are/ is ...
...动名词和不定式的完成式做主语有没有区别。To have made the same mistake twice is unforgivable.Making the same mistake twice is unforgivable.期待曹老师的解答,希望您能有像非谓语动作作宾语一样的观点和总结。万分感谢!
...(误译:他进来时我正要走)(B) I was cooking when she knocked at the door. 我正在做饭,突然听到他的敲门声。(误译:他敲门的时候我正在做饭)(C) I was on the point of telephoning him when his letter arrived. 我正要给他打电话,他的信就来了。(误译:...