Thanks Zachariah -  

Do you have a link to share for the TWENDE?  I see a book that has a similar name (by Joan Maw) - is that what you are referring to? Do you know this book? Do you recommend it?

Asante Eduardo! 

Nililipia Kamusi Kiswahili kwa wanafunzi wa shule ya sekondari.

Kina asili ya neno na ngeli.  

Kwa mfano: 

Chai mn [i-/zi] 1. namna ya kinywaji kitengenezwacho kwa kutia majani ya mchai katika maji moto: Ana kwa kweli chai ya mkandaa ni dalili ya uchochole.  2. kadhongo; hongo; chauchau; rushwa; mlungura: Mwenye kuzoea chai hatendi lolote kwa haki. 3. majani ya mti wa mchai: Kericho ndiko kuvunwako chai kwa wingi. (Khi). 

http://www.africanbookscollective.com/books/kamusi-teule-ya-kiswahili

Ndicho kigumu sana! 

Vitabu vipya

Nilifanyaje? Asante sana kwa msaada wako.

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I'm still learning also - 

chakula cha asubuhi: I usually see "kiamsha kinywa", so this would have been "Baada ya kiamsha kinywa" 

 kwa dukani va vitabu:   kwenye is definitely used here instead of "kwa". Duka is a ja/ma class word, so la instead of va.  I don't think you add the -ni to duka in this case.  "Niko dukani" yes, but "kwenye duka la vitabu" sounds better to me. 

kitabu mpya ya: ki/vi class word, so need "kitabu kipya cha"... 

tamaduni: Interesting word, I've not seen this one before. I've been looking for a word describing "culture", "tradition", or even "habits". I'd like to see a comparison to "destrui", "Mila", or "mtindo" by native speakers! 

Houseplant

   Houseplant is usually one word. 

It's grown by me.

    Usually not passive, try: 

    I grew it.  or I am growing it.  or perhaps It's growing in my house. 

I can't remember its name(kinds it is a kind of catcus grasses).

    Your plant is a type of cactus, not a grass, see https://en.wikipedia.org/wiki/Schlumbergera

It's half size of large in the picture around fall of last year.

    This sentence is pretty awkwardly constructed.. try instead "Last fall, the plant was half the size it is in the picture" if the picture is current you could say "Last fall the plant was half the size it is now." 

It became twice size for three months.

      Better would be "It doubled in size in three months" 

It grows fast!

Ninapenda Tembo sana 

7-38 7:44 Tembo anasema:  

"Na hata kama ukijibu maswali hayo mawili.  Kuna swali la tatu. Tutaabira(?) nende(?) wapi baadaye la kukatoa."

Ikiwa kuna swali la tatu, maswali ya kwanza mawili ni nini?