Unit 10 It’s a nice day, isn’t it?
（1）the coat costs at least $200.
（2）at least i have tried my best.
5. the traffic is very busy at this time. 車輛這時(shí)候非常多。
traffic 用作不可數(shù)名詞，意為“交通”。若表示交通繁忙，則用busy 或heavy。
i’m late because of the busy/ heavy traffic.
6. friends like you make it easier to get along in a new place.
有你這樣的朋友使我在異地的相處變得容易多了。
（1）make it ＋形容詞＋不定式，意思是“使得做某事變得……”
△reading aloud makes it easier to learn english.
△the bad weather makes it hard to finish the work on time.
惡劣的天氣使得按時(shí)完成工作有了難度。
（2）get along 意為“相處”，get along (well) with sb. 意為“和某人（友好）相處”，相當(dāng)于“get on (well) with sb.”。
△what should i do to get along well with my classmates?
△how do you get along with your parents?
7. their prices are really low, aren’t they?
他們的價(jià)格確定很低，不是嗎？
low 指“低的”，其反義詞為high，可用來修飾價(jià)格，聲音，建筑物，溫度等。
（1）the temperature was very low/ high yesterday.
（2）she always speaks in a low voice.
8. the line is slow, isn’t it?
slow 在此處用作形容詞，意為“緩慢的”，其反義詞為fast.
例如：slow music, a slow train/ walk.
the clock is two minutes slow.
9. be careful to look both ways before you cross the street.
be careful 意為“當(dāng)心，小心”，相當(dāng)于take care，可以單獨(dú)使用，也可接不定式。
（1）be careful! it’s dangerous.
（2）be careful not to fall off the bike.
10. i hope so. 我希望如此。
此句式常用來表示希望上面提到的情況發(fā)生，若不希望發(fā)生，則用i hope not。常用的類似句型還有：i’m afraid so/ not.
i think so. /i didn’t think so.
例如：（1）－it will be a fine day today.
－i hope so.
（2）－can you come to join us?
－i’m afraid not. i have to take lessons.
四. 語法：反意疑問句：
反意疑問句又叫附加疑問句。其結(jié)構(gòu)為：前一部分是一個(gè)陳述句，后一部分是一個(gè)簡(jiǎn)單問句。前后兩部分的人稱和時(shí)態(tài)要保持一致。若前一部分用肯定式，后一部分則用否定式；反之，前面用否定式，后面則用肯定式，即“前肯后否；前否后肯”。附加問句的主語要用人稱代詞，不用名詞。
1. （1）it’s a nice day, __________ __________?
（2）tom exercises every day, __________ __________?
（3）your parents will take a vacation, __________ __________?
（4）you have eaten lunch, __________ you?
（5）he isn’t watching tv, __________he?
（6）tom and bob were late, __________ __________?
2. （1）what a lovely day, __________ __________?