19.

“What's the noise?

“I am doing exercises.”

“什么声音？”

“我在做运动。”

what's = what is什么

noise —噪音、噪音

doing —做（do的现在分词）

exercise —锻炼

exercises — exercise的复数

20.

“Why is the floor shaking?”

“I jumped once or twice.”

“为什么地板在晃动？”

“我跳了几下。”

floor —地板

shake —摇动

shaking — shake的现在分词

jump —跳跃

jumped — jump的过去分

once —一次

or —或者

twice —两次

21.

“Why are you out of breath?”

“I ran in place for ten minutes.”

“你为什么上气不接下气？”

“我原地跑了十分钟。”

breath —呼吸

out of breath —气喘吁吁

run —跑步

ran — run的过去分词

in —在

place —地点

for —为了

ten —十

minute —分钟

22.

“What else did you do?”

“Nothing.”

“你还做了什么？”

“没什么。”

else —其他

nothing —什么都没有

23.

“What are you doing now?”

“I am doing squats.”

“你现在在干什么？”

“我在做深蹲。”

now —现在

squat —蹲下

24.

“Can you do a one leg squat?”

“Yes, I can.”

“你会单足蹲吗？”

“是的，我可以。”

can —（表示有能力做或能够发生）能，会；（表示知道如何做）懂得

leg —腿

25.

“Is that easy?”

“No, it's difficult.”

“这容易吗？”

“不，这很难。”

that —那个

easy —容易

difficult —困难的

26.

“How many squats have you done?”

“Twenty.”

“你做了多少个深蹲？”

“二十个。”

how —怎样；如何（后接形容词或副词）多少，多么，多大

many —许多

done — do的完成时态

27.

“What are you doing now?”

“I am doing push-ups.”

“你现在在干什么？”

“我在做俯卧撑。”

push-up —俯卧撑

28.

“How many push-ups can you do?”

“Thirty.”

“你能做多少个俯卧撑？”

“三十个。”

29.

“And you, mom?”

“None.”

“你呢，妈妈？”

“一个也做不了。”

none —无

30.

“Why don't you start doing exercises, too?”

“I will start on Monday.”

“你为什么不一起锻炼呢？”

“我从星期一开始。”

start —开始

Monday —星期一 +IQJVmMFWDSvomzHym6BQDf4eHSXrylxb8mTL7inZ0bwXqEpoeN0Bi8ZjdfgTRUC