New Words：
bumblebee [ˈbʌmblbiː] n. 熊蜂；大黄蜂
earthworm [ˈɜːrθwɜːrm] n. 蚯蚓
Sample Sentences：
A bumblebee stung me on the cheek.
There's no way to free Bumblebee without harming the humans.
The earthworm is good for our crops.
I ate a whole earthworm when I was five.
sting [stɪŋ]
v.刺；蜇；叮；（使）感觉刺痛
n.刺；刺伤；蜇伤；刺毛
stung [stʌŋ] sting的过去分词和过去式
harm [hɑːrm]
n.伤害；损害
v.伤害；损害
crop [krɒp] n.庄稼；作物
New Words：
sandpit [ˈsændpɪt] n.（供儿童玩的）沙坑
sandpile ['sændpail] n.（供儿童玩的）沙堆
Sample Sentences：
The children are playing in the sandpit at the river side.
There was a sandpit, a seesaw and a swing in the playground.
New Words：
daisy [ˈdeɪzi] n. 雏菊花
bug [bʌg] n. (机器，尤指计算机的）故障，程序错误，缺陷 ;虫子;小昆虫
Sample Sentences：
He pulled a bunch of daisies from behind his back.
Daisies are small white flowers which open during the day and close at night.
There is a bug in the system.
Most girls are really afraid of bugs.
That's why we test software: to find bugs.
We noticed tiny bugs that were all over the walls.
New Words：
simple [ˈsɪmpl] adj. 易于理解的；易做的；简单的
Sample Sentences：
This machine is very simple to use.
We had a simple meal of soup and bread.
I need a simple yes or no to my questions.
The answer may not be as simple as you think.
New Words：
unless [ənˈles] conj. 除非；若非；除非在…情况下；如果不
Sample Sentences：
You will fail unless you work hard.
I won't tell them ─ not unless you say I can.
I'm not happy unless I ride or drive every day.