New Words：
serious [ˈsɪriəs] 严肃的；认真的；重要的；严重的
seriously [ˈsɪriəsli] 严重地;严肃地;认真地;(用于句首，表示转为谈正事)说正经的，说实在的
You can't be serious!(= You must be joking!)
你一定是在开玩笑吧！
I'm not a very serious person.
我不是一个非常严肃的人。
Don't laugh boy. This is serious.
小伙子，别笑，这很严肃。
I hope you're not serious.
我希望你不是认真的。
Seriously, I only smoke in the evenings.
真的，我只在晚上抽烟。
He was seriously ill.
他病的很严重。
They're seriously rich.
他们极为富有。
Seriously?
你说的是真的吗?不是开玩笑的吗?你是认真的吗?
New Words:
joke [dʒəʊk] n. 玩笑，笑话；笑柄； v. 说笑话;开玩笑;闹着玩;说着玩
chopsticks [ˈtʃɒpstɪks] 筷子
You're joking. Are you serious?
你准是在开玩笑。你是认真的吗？
That's only a joke.
那只不过是句玩笑话。
She didn't get the joke.
她不明白那笑话的含义。
I can't tell jokes .
我不会讲笑话。
New Words：
must [mʌst , məst] 必须;一定;应该，得
'You must be Emma,' said Miss Green.
格林小姐说：“你肯定是埃玛。”
You must see a doctor, Wilma.
威尔玛，你一定得去看医生。
You must be joking!
你一定是在开玩笑吧！
I'm sorry, but I must go now.
对不起，但是我得马上走。
rest [rest] 休息;放松
worn out [ˌwɔːrn ˈaʊt] 疲惫不堪;精疲力竭
take a rest = have a rest 休息一下
'You're worn out, Laura,' he said. 'Go home and get some rest.'
“你太累了，劳拉，”他说，“回家休息一下吧。”
You take a rest. Let me do it.
你歇歇，让我来吧。
It's nice and cool here. Let's sit down and have a rest.
这里凉快，坐下来歇会儿。
New Words:
roll [rəʊl] (使)翻滚，滚动;
need [niːd] 需要
them [ðəm] 他们;她们;它们
parent [ˈperənt] 父亲(或母亲)
The ball rolled into the net.
球滚进了网中。
I need to make a phone call.
我要打个电话。
Children need their parents.
孩子们需要父母。
Do you need any help?
你需要帮忙吗？
I need to get some sleep.
我需要睡会儿觉。