Avvalo birinchi grammatik qoidalarni undan so’ng qiladigan xatolarni ko’rib chiqing bu sizni kelasida qilinadigan har qanday xatolardan saqlab qoladi. Uni tugatib test yechish sirlarini yaxshilab o’rganib chiqing

91. O’tgan zamonda bir ish-harakatdan oldinroq tugagan ish-harakat uchun Past Perfect o’rniga boshqa Past zamonlarni ishlatish
Wrong: The train already left before I arrived
Right: The train had already left before I arrived
O’tgan zamonda bir vaqtdan yoki biror ish-harakatdan oldin tugagan ish-harakat uchun Past Perfect ishlatamiz. Vaqt by, by the time, when orqali ifodalanishi mumkin.

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  I had finished dinner by six o’clock.- Men soat 6 gacha tushlikni tugatgandim.( Buyerda tushlikni nechida tugatdi bilmaymiz, lekin biz 6 dan oldin ya’ni 6 gacha tugatganini bilamiz. Shu sababli birichi tugagan ish-harakat Past Perfect ishlatildi.)
  
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  The train left at 9am. We arrived at 9.15am. When we arrived, the train had left. - Poyezd soat 9 da jo’nab ke’tti. Biz 9:15 yetib keldik(vokzalga). Qachonki biz kelganimizda, Poyez ketib bo’lgandi
  

Izoh: Nega biz buyerda Past Perfect ishlatdik? Chunki poyez ketib bo’lishi biz kelishimizdan oldin sodir bo’lgandi, Biz bir ish-harakatdan oldinro boshqa ish-harakat sodir bo’lganiga urg’u berish uchun birinchi sodir bo’lgan ish-harakat uchun past perfect ishlatamiz. Bunda Perfectdagi ish-harakat Past Simlpe dagidan oldin tugagan bo’ladi.. Biz 9:15 keldik, poyezd 9:00 jonat ketgandi…
Doimo birinchi tugagan ish-harakatni Past Perfect ikkinchi ish-harakatni Past Simple ifodalang. Agar ikkita ish-harakatdan bittasi ikkinchisan oldin tugagan bo’lsa birinchi tugagani Past Perfectda ifoda eting.
92. No sooner…than, hardly/scarcely…when qurilishda daraka gaplarni noto’gri tuzish
Wrong: Hardly /Scarcely I had reached the station when the train came Right: Hardly/ Scarcely had I reached the station when the train came
Wrong: No sooner he had arrived, than he fell ill.