全文 The whole conversation, with pinyin and English
妈妈：志伟，教练刚才发信息来，今天的跆拳道课取消了。
zhì wěi jiào liàn gāng cái fā xìn xī lái jīn tiān de tái quán dào kè qǔ xiāo le
Mum: Zhiwei, the coach just sent a message. Today's taekwondo class is cancelled.
志伟：为什么取消？我已经换好道服了！
wèi shén me qǔ xiāo wǒ yǐ jīng huàn hǎo dào fú le
Zhiwei: Why is it cancelled? I've already put on my uniform!
妈妈：因为外面在打雷闪电，雨也下得很大。
yīn wèi wài miàn zài dǎ léi shǎn diàn yǔ yě xià de hěn dà
Mum: Because there's thunder and lightning outside, and it's raining very hard.
志伟：可是我们在室内上课，不会淋雨啊。
kě shì wǒ men zài shì nèi shàng kè bú huì lín yǔ a
Zhiwei: But we have class indoors. We won't get wet.
妈妈：不过去上课要走过空地，打雷的时候在外面很危险。
bú guò qù shàng kè yào zǒu guò kòng dì dǎ léi de shí hou zài wài miàn hěn wēi xiǎn
Mum: But to get there you have to cross an open field, and being outside in a thunderstorm is dangerous.
志伟：好吧……可是我很想学新的踢腿动作。
hǎo ba kě shì wǒ hěn xiǎng xué xīn de tī tuǐ dòng zuò
Zhiwei: OK… but I really wanted to learn the new kick.
妈妈：那我们在家里练习吧！先拉筋，再练踢腿。
nà wǒ men zài jiā lǐ liàn xí ba xiān lā jīn zài liàn tī tuǐ
Mum: Then let's practise at home! Stretch first, then practise kicks.
志伟：太好了！妈妈，你帮我拿着枕头，好不好？
tài hǎo le mā ma nǐ bāng wǒ ná zhe zhěn tou hǎo bu hǎo
Zhiwei: Great! Mum, will you hold a pillow for me?
妈妈：好，你对着枕头踢。小心，不要踢到桌子。
hǎo nǐ duì zhe zhěn tou tī xiǎo xīn bú yào tī dào zhuō zi
Mum: OK, kick at the pillow. Careful, don't kick the table.
志伟：嘿！哈！妈妈，我踢得有力吗？
hēi hā mā ma wǒ tī de yǒu lì ma
Zhiwei: Hi-yah! Mum, are my kicks strong?
妈妈：很有力！下个星期上课，你可以踢给教练看。
hěn yǒu lì xià ge xīng qī shàng kè nǐ kě yǐ tī gěi jiào liàn kàn
Mum: Very strong! At next week's class, you can show the coach.
志伟：好！今天虽然没去上课，可是在家也很好玩。
hǎo jīn tiān suī rán méi qù shàng kè kě shì zài jiā yě hěn hǎo wán
Zhiwei: OK! I didn't go to class today, but it was fun at home too.