diff --git a/docs/en/unit/tof.md b/docs/en/unit/tof.md
index 7a6ebd48..f9f5f9ff 100644
--- a/docs/en/unit/tof.md
+++ b/docs/en/unit/tof.md
@@ -15,13 +15,13 @@ This unit integrated a distance measuring sensor VL53L0x providing accurate dist
 This unit comunicates with M5Core via I2C(0x29).
 
 
-*Noitce: If you found TOF performance unstable, means waht you have could be the old-version hardware PCB board, Following will teach you how to fix the PCB board*
+*Noitce: If you found TOF performance unstable, means what you have could be the old-version hardware PCB board, Following will teach you how to fix it*
 
-- Disassembling TOF and Check the PCB board, if you see it like this , means it is the new version. 
+- Disassembling TOF and Check the PCB board, if you see it like this, means it is the good(fixed) version. 
   <img src="assets/img/product_pics/unit/tof/unit_tof_05.jpg" width="30%" height="30%">
-- If not, take off the two MOSFET (AO3400A), and connect SCL,SDA directly to VL53L0x. Wire pattern refer to the photo above.
+- If not, take off the two MOSFETs (AO3400A), and connect SCL,SDA from GROVE directly to SCL,SDA on VL53L0x. Wire pattern refer to the photo above.
 - <img src="assets/img/product_pics/unit/tof/unit_tof_sch_02.jpg" width="30%" height="30%">
-- In this pattern, make sure you use the 3.3V on SDA and SCL, M5Core GROVE provide 3.3V to data pins, 5V to power pin. only 3.3v allowed on VL53L0x.
+- In this case, make sure you use the 3.3V on SDA and SCL, M5Core GROVE provide 3.3V to data pins, 5V to power pin. only 3.3v allowed on VL53L0x.