1．She is a sixteen-year-oldgirl.=She is sixteen years old.
2. allow sb. to do sth. 允许某人做某事（主动语态）
be allowed to do sth. 被允许做某事（被动语态）
Mother allows me to watch TV every night.
LiLy is allowed to go to America.
3. get their ears pierced 穿耳洞
让/使（别人）做某事
get sth. done(过去分词)
have sth. done
I get my hair cut. == I have my hair cut.
4. enough 足够
形容词＋enough 如：beautiful enough 足够漂亮
enough＋名词 如：enoughfood 足够食物
enough…to 足够…去做…
例：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。
5. stop doingsth. 停止做某事 Please stop speaking.
stopto do sth. 停止下来去做某事 Pleasestop to speak.
6. 系动词用法：系动词+adj
常用的系动词有：look, feel, be, become, get,turn, smell, taste, stay(保持), kept等。
连系动词除be和become等少数词可接名词作表语外，一般都是接形容词。
例：They are very happy.
He became a doctor two years ago.
She felt very tired.
The grass turns green.
7. get in the way of 碍事，妨碍
例：Her social life got in the way of her studies.
8. ① also 用于句中
I also like apples.
② either用于否定句句末
I don’t like apples, either.
③ too 用于肯定句句末
I like apples, too.
