1. get their ears pierced 穿耳洞
让/使(别人)做某事 get sth. done(过去分词)
have sth. done 如：
I get my car repaired. == I have my car repaired. 我让别人修好我的车
I want to have my hair cut. 我要理发.
2. enough 足够
形容词+enough 如：beautiful enough 足够漂亮
enough+名词 如：enough food 足够食物
enough to 足够…去做… 如：
I have enough money to go to Beijing. 我有足够的钱去北京。
She is old enough to go to school.她够大去读书了。
3. stop doing sth. 停止做某事 Please stop speaking.请停止说话。
stop to do sth. 停止下来去做某事 Please stop to speak. 请停下来说话。
4. 看起来好像…sb. seem to do sth. = It seems that +从句
He seems to feel very sad.
It seems that he feels very sad. 他看起来好像很伤心。
Neither/Nor + be动词/助动词/情态动词+主语(前为否定) 表示与前面所述事实一致.
She is a student. So am I. 她是一个学生，我也是。
She went to school just now. So did I . 她刚才去学校了，我也是
She has finished the work. So have I . 她已经完成了工作,我也完成了。
She will go to school. So will he. 她将去学校，他也是。
Tom can’t swim. Neither can John.
6. yet 仍然，还 常用在否定句或疑问句当中 可与although/though连用
7. stay up 熬夜如：I often stay up until 12:00pm.我经常熬夜到12点。