八年級英語上冊第二單元知識點（2018新版人教版）
eg2)the teacher doesn't want us to eat hamburgers.老師不想讓我們吃漢堡包。
注意：有很多動詞后面用這種結構做動詞的復合賓語，如：
ask sb. to do sth. 叫某人做某事
tell sb. to do sth. 告訴某人去做某事
help sb. (to) do sth. 幫助某人做某事
6. she says it’s good for my health.
解析：be good for...表示“對……有益（有好處）”；
其反義為：be bad for...。（這里for 是介詞，后跟名詞、代詞或動名詞）如：
eg1)it's good for us to do more reading. 多讀書對我們有好處。
eg2)reading in bed is bad for your eyes.在床上讀書對你的眼睛有害。
7. how many hours do you sleep every night?
8. i exercise every day , usually when i come home from school .
9. my eating habits are pretty good .
解析：這里pretty相當于very 。
10.i try to eat a lot of vegetables , usually ten to eleven times a week .
解析：try to do sth.表示“ 盡力做某事 ” ，不包含是否成功的意思
try doing sth.表示“（用某一辦法）試著去做某事”。如:
eg)you’d better try doing the experiment in another way.你最好試試用另一種方法做這個試驗。
11. my healthy lifestyle helps me get good grades.
解析：help sb.(to) do sth.幫助某人做某事
12. good food and exercise help me to study better.
解析：這里better是well的比較級，而不是good的比較級
13.is her lifestyle the same as yours or different?
＝is her lifestyle the same as your lifestyle or is her lifestyle different from yours?
解析：be the same as … / be different from …
14. what sports do you play ?
15. a lot of vegetables help you to keep in good health .
解析：keep in good health = keep healthy = stay healthy
16. you must try to eat less meat .
解析：try to do sth.表示“盡力做某事” ,不包含是否成功的意思,less是little的比較級
17. that sounds interesting.
解析：這是“主語+系動詞+表語”結構的簡單句。
sound（聽起來），look（看起來），smell（聞起來），taste（嘗起來），feel（覺得），seem（好象）,grow（變得）,get（變得）等詞在英語中可用作系動詞，后跟形容詞作表語。如：
eg1)it tastes good. 這味道好。
eg2)the music sounds very sweet. 這音樂聽起來很入耳。
eg3)the smoke grew heavier and heavier. 煙霧變得越來越濃了。
18. i think i’m kind of unhealthy.我想我有點不健康。
解析：kind of = a little
a kind of 一種
19.exercise such as playing basketball is fun.像打籃球這樣的鍛煉是有趣的。
20.although=though雖然 <不能與but連用>
如：although he is old, he is quite strong.(he is old, but he is quite strong.)
解析：句子中，有although或though就不可再用but，但可用yet或still“仍然，還”；
與之類似的情況：有because就不能再用so.
21.she says it’s good for my health.她說它對我的健康有好處。